If f(x) = x2 - 4x and f(-3), then the result is:
o -3.
O 21.
0 -21.

answer is 6

Step-by-step explanation:

f(x) = x2 - 4x

f(-3)= -3*2-4*-3

      =-6-(-12)

      =6

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

b). 4320 have a nice day