Find the volume of the rectangular prism

Please help! Due by 12:00 am!

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

Find the equation of a line whose slope is 2/5 and y- intercept is 2.write your answer in the form 1) ax+by+c=02) x/a+y/b=1

Joanie wrote a letter that was 1 1/4 pages long. katie wrote a letter that was 3/4 page shorter then joagies letter. how long was katies letter