Answer:
Step-by-step explanation:
3f(-2x)= 3[2(-2x)^2-3(-2x)+1]
=3[2(4x^2)+6x+1]
=3[8x^2+6x+1]
=24x^2+18x+3
y = 11
y = 2(7) - 3
y = 14 -3