Answer:
see explanation
Step-by-step explanation:
The average rate of change over the closed interval [ a, b ] is

here [ a, b ] = [ 0, 8 ]
f(b) = f(8) =
=
= 
f(a) = f(0) =
= 
f(b) - f(a) =
-
= 
average rate of change =
= 
74 = 20(2.5) + 20(x)
74 = 50 + 20x
74-50 = 20x
24 = 20x
24/20 = x
1.2 = x
x = 1.2 yards of red felt
Isn't that standard form sorry for this bad answer
Answer:
6
Step-by-step explanation:

Therefore, 