Answer:
f(3) = 4
f(-7) = -26
Step-by-step explanation:
Hi there!

To find f(3), replace every x with 3:

Therefore, f(3)=4.

To find f(-7), replace every x with -7:

Therefore, f(-7)=-26.
I hope this helps!
7. 324m squared
8. 166mm squared
9. 49.2yd squared
sorry I'm too lazy to do the rest
D- $48.50
you have to subtract the largest and the smallest number to find the range
So basically your doing unit rates? Well guess what, I'm studying about that also, and I have a little understanding about unit rates, have you done ratios before?
Can you please take a picture of the question?