Answer:
14
Step-by-step explanation:
28=Diameter
Radius= D/2
=14
<span>f(x) = x² + 4x
so
</span><span>f(-2) = (-2)² + 4(-2)
f(-2) = 4 - 8
f(-2) = -4
answer
-4</span>
12 and 14 are not functions cause they fail the horizontal line test!
The answer is 2,320 seats in the amphitheater. Since the seats are increasing at a rate of 4 more seats each row, then just add 4 to the number for each past row starting at 32 since that's where the rest is unknown. Once you find all he numbers just add them up to get your answer.
I hope I helped!
1st two are 25, next two are three times that
so 3 x 25 = 75
so the four digit number is 2575
that is multiplied by 352
so 2575 x 352 = 906400
