Answer:
The expression = -75
Step-by-step explanation:
Evaluate: Enter a number for each variable.
−x2+7(y+2)−1
x=
5
y=
-9
Evaluate for x=5,y=−9
−52+7(−9+2)−1
−52+7(−9+2)−1
=−75
Answer:
35
Step-by-step explanation:
92-5+4-3=35
Answer:
The slope is 
Step-by-step explanation:
☆Remember:

☆We just plug in now!

Answer:
r(-2) = -5 , r(0) = -7 , r(5) = -12.
Step-by-step explanation:
Answer:
I just had this problem on a test! I hope this helps, i will attach a picture of my messy work, but hopefully that will give you an idea on how do do it!
How to Solve!-
Repeat this distance formula for each side