52/38 = 1.368
1.368 x 63 = 86.21
tree is 86.2 feet high
44.85 * 9.84 = 441.2256
88.6 * 5.01 = 443.886
Answer:
-3x+8
Step-by-step explanation:
-2x-x+8=
-3x+8
Answer:
C
Step-by-step explanation:
The average rate of change of f(x) in the closed interval [ a, b ] is

Here [ a, b ] = [ - 10, 10 ], thus
f(b) = f(10) = 10² + 9(10) + 18 = 100 + 90 + 18 = 208
f(a) = f(- 10) = (- 10)² + 9(- 10) + 18 = 100 - 90 + 18 = 28, thus
average rate of change =
=
= 9