Answer:
80cause there are 80 sides
Answer:
Ummm. 1 & 3 look good double check 2
Step-by-step explanation:
HELPFUL?
Explanation

When taking derivatives of polynomials, we primarily make use of the power rule.
Power rule.

also, the derivate of a sum is the sum of the derivates
hence

Step 1
apply:

therefore, the answer is
Answer:
14/25
Step-by-step explanation: