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Description
Easy Pre-Calculus Step-By-Step, Second EditionGet the knowledge and skills you need to solve pre calculus problems with confidence The quickest route to learning a subject is through a solid grounding in the basics. Rather than endless drills, this accessible guide presents an original, step by step approach to help you develop a better understanding of pre calculus topics. You'll find important concepts linked together by clear explanations, invaluable exercises, and helpful worked out problems.
Get the knowledge and skills you need to solve pre-calculus problems with confidenceThe quickest route to learning a subject is through a solid grounding in the basics. Rather than endless drills, this accessible guide presents an original, step-by-step approach to help you develop a better understanding of pre-calculus topics. You'll find important concepts linked together by clear explanations, invaluable exercises, and helpful worked-out problems. Once you've mastered the topics in this book, you will find yourself well-equipped to begin your calculus studies.
This book features: -A new Trigonometry chapter that will round out your pre-calculus studies-Clear explanations that break down concepts into easy-to-understand steps-Stay-in-step "pop-ups" offering helpful advice and cautions against common errors-Step-it-up skill-building exercises linking practice to the core steps already presented-Worked-out solutions to all exercises that reinforce understanding of concepts
Binding Type: Paperback
Publisher: McGraw-Hill Education
Published: 12/26/2018
ISBN: 9781260135114
Pages: 400
Weight: 1.25lbs
Size: 9.00h x 7.30w x 1.00d
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★★★★★ 5
Good, inexpensive replacement filter
I've used these filters for a couple years (four replacements) on my Subaru Crosstrek, and they seem to do the job well, probably as well as the original. I generally remove and clean them every three months, and replace them every six.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Save some money by doing your own cabin filter change! (You won't notice a difference).
So, one day I was getting an oil change at the dealership, and the associate told me that cabin filter was pretty dirty, which I believed because of the places I take the car, and she said that they could change it while they were finishing up the rest of their inspection, since they already had it apart. I asked her "How much?", and then we both had a laugh when she said "$90." I told her I'd take care of it.
It took two days for Amazon to get a replacement filter to me, twenty minutes to watch a You Tube video showing how to replace the cabin filter on my car (I watched it twice), and then about twenty-five minutes to replace the filter itself--I keep a messy glove compartment, so a good portion of the time was loading and unloading that nightmare.
In the end, under $15 for the filter, maybe 45 minutes to watch and replace, and the cabin filter hasn't been this good since I first bought the car.
This replacement version was as good as the OE filter, fit exactly the same, there's no difference in airflow that I can tell, and so far (6 months later), it seems to be holding up pretty well. We'll see what it is like after a year. I did get the oil changed about a week ago, and the technician didn't raise any alarms about the filter, so everything seems to be working.
$90 for a new filter? You can do it yourself cheaper.
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Reviewed in the United States on April 6, 2026
★★★★★ 4
Fresh Air Upgrade for My 2024 Impreza
Installed this in my 2024 Subaru Impreza, and it fit perfectly—no issues. The air smells noticeably cleaner now, and it took less than 10 minutes to swap out. The carbon and HEPA filtration does a great job clearing out odors, dust, and pollen—definitely an upgrade over the factory filter.
The build feels sturdier than the OEM version, though it does have slightly fewer pleats. Might mean it needs replacing a bit sooner, but for the price and performance, I’m fine with that tradeoff.
If you’re looking for a quick, affordable way to improve your cabin air, this one’s a solid pick.
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Reviewed in the United States on June 26, 2025
★★★★★ 5
Well built, good fit.
I like it so well, I just bought two more to keep on the shelf for when the price doubles. Seems better built than oem, but I don't know how you can judge the filtration; seems good though.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Great product
Perfect fit for 21 Cross Trek
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Reviewed in the United States on February 12, 2026