Answer:
4^11
Step-by-step explanation:
When you get a multiplication you add the powers.
7 + 4 = 11
78,100
1280 cones because you would add 60 +4 and multiply by 20, and would get 1280 cones.
84.9
R²=2.6x2.6
=6.76
6.76xπ=21.2264
21.2264x4=84.9056
Rounded to 84.9
A. -10x^2 - 3x + 4.
