OpenStax, Algebra and Trigonometry 2e §3.4 Composition of Functions · Exercise 99 · Algebra · Functions

Composition of Functions · Exercise 99

A forest fire leaves behind an area of grass burned in an expanding circular pattern. If the radius of the circle of burning grass is increasing with time according to the formula $r (t) = 2 t + 1,$ express the area burned as a function of time, $t$ (minutes).

Its source prints no answer for this problem, so there's nothing to check against.

~8 minWritten answer · compare with the solution

OpenStax, Algebra and Trigonometry 2e · §3.4 Composition of Functions · Exercise 99

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.