Question

Average rate of change..

Answer 1

f(50)-f(40)/50-40 = (1.5 square root 50 +28.6)- (1.5 square root 40 +28.6)/ 50-40

Answer 2

I remove the parentheses and distribute the negative..

Answer 3

Yes you can use the distributive property. A(b+c) =A*b+A*c

Answer 4

I got .112

Answer 5

Let me see if I can find a calc to check your approx. On a phone. No desktop or laptop :(

Answer 6

Okay

Answer 7

Actually it was pretty easy to type into wolfram http://m.wolframalpha.com/input/?i=%281.5*sqrt%2850%29-1.5*sqrt%2840%29%29%2F%2850-40%29&x=12&y=11

Answer 8

The system told me I was wrong. The correct answer is 0.1

Answer 9

0.1 is the correct answer if you are to round to the nearest tenth

Answer 10

0.112 is the correct answer if you are to round to the nearest thousandths

Answer 11

Oh okay. Thank you.

Answer 12

Good job on the calculator part.