### Still have math questions?

Q:

If $$f(x)=3x^2+1$$ and $$g(x)=1-x$$, what is the value of $$(f-g)(2)$$

$$12$$

$$14$$

$$36$$

$$38$$

Q:

If $$f(x)=x^2-6x+2$$ and $$g(x)=-2x$$, find the following composition.

$$(g\circ f)(-5)$$

Q:

The length of a rectangle is increasing at a rate of $$2$$ ft/s, and its width is increasing at a rate of $$5$$ ft/s. At what rate is the area of the rectangle increasing when the length is 5ft and the width is $$10\mathrm{ft}$$.