Question

Pleeeease help me

Answer 1

Part A:
Cory f(x)=
$15 \times (1 + 20\%)^{x}$
f(x) = 15 x 1.2x

Roger f(x)= 40 + x

Part B
Cory
f(6)=15 x 1.2(6) = 44.79 =44

Roger
f(6) = 40 +6 =46

Part c
Cory =Roger
15 x 1.2 x = 40 +x
18x =40 +x
17x =40
x=40/17
x=2.35