OpenStax, Elementary Algebra 2e §6.1 Add and Subtract Polynomials · Exercise 79 · Algebra · Polynomials

Add and Subtract Polynomials · Exercise 79

Fuel Efficiency The fuel efficiency (in miles per gallon) of a car going at a speed of $x$ miles per hour is given by the polynomial $- \frac{1}{150} x^{2} + \frac{1}{3} x$ . Find the fuel efficiency when $x = 30 mph$ .

~8 minWritten answer · compare with the solution

OpenStax, Elementary Algebra 2e · §6.1 Add and Subtract Polynomials · Exercise 79

Stuck? A gentle nudge

No hints for this one.

Something off?

Workspace

Your working

Check your full solution

Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.