Answer:
see explanation
Step-by-step explanation:
Equation 1
y = kx² → B
Equation 2
y = → D
Equation 3
y = → C
Equation 4
y = kx → A
-4
x=5
9(3x-16)+15=6x-24
27x-144+15=6x-24
27x-129=6x-24
21x=105
x= 5