Answer:
21x^5−21x^2
Step-by-step explanation:
hope this helps
Answer:

Step-by-step explanation:
The formula of an area of a circle:

r - radius
Circle A:
radius = 4 ft. Substitute:

Circle B:
radius = 9 ft. Substitute:

The ratio:

I think is C tbh sorry if that’s wrong my fault
Answer:
4x+1
Step-by-step explanation:
Since you're finding (f+g) (x), it means you are adding f(x) and g(x) together.
so you add: (3x-1) and (x+2)
combining like terms, you get 4x and 1, which means (f+g)(x)= 4x+1
Answer:
(728, 748)
Step-by-step explanation:
You need the Z value which for 95% confidence interval is 1.96. The mean is $738 and the standard deviation of $41.

Therefore we can calculated the confidence interval


The interval is (728,748)