F(x) = 3/2x - 9
f(-4) = 3/2(-4) - 9
f(-4) = -6 - 9
f(-4) = -15
H= V / pi r^2
and
a= 2A / p
(x - 5) represents the total charge before applying sales tax.
The 2 triangles are similar so corresponding sides are in the same ratio
4/5 = 6 +x / 4x- 8
cross multiply;
30 + 5x = 16x - 32
11x = 62x
x = 5.636
AB = 4(5.636) - 8 = 14.545
