Answer:
F(x)=160+40x
F(x)=100+70x
F(X)=50+125x
Step-by-step explanation:
The enrollment fee is constant but the monthly price is multiplied by the amount of months which i represent with X.
Gym A: 160+40=200, Gym B: 100+70=170, Gym C: 50+125=175
See below in bold.
(A) 20 -4x=12 -x+8-3x
-4x + x + 3x = 12 + 8 - 20
0 = 0 This is an Identity.
Infinite solutions.
B). 5x+4x-3=24+8x
9x - 8x = 24 + 3
x = 27. One solution.
C. 5x+6=2x+6+3x-15
5x - 2x - 3x = -15 + 6 - 6
0 = -15
No solution.
