F(-5) = -5^2 - 2*(-5) - 7 = 25 - (-10) - 7 = 25 + 10 - 7 = 25 + 3 = 28
Answer:

Step-by-step explanation:
Use Pythagorean theorem since you have a right triangle
= 
225 = 100 +
so x = 
She should chose the $9 because it is cheaper ;)
Answer:
45
Step-by-step explanation:
A whole circle is 360 so if you divided that by 8 you get 45