Answer:
D
Step-by-step explanation:
R(x) = -x^2+122x+400
Answer:
16
+ 2t - 6
Step-by-step explanation:

simplify

combine like terms
16
+ 2t - 6
3^2 goes onto the left side of the triangle
5^2 goes onto the bottom
x^ goes on the slant part of the triangle
Answer:

Step-by-step explanation:

Answer:
7
Step-by-step explanation:
Its 7 because khan academy and i know it