Answer:
d
Step-by-step explanation:
you cannot have two x values in a function
7000
x2 - 22x + 121
= x2 - 11x - 11x +121
= x(x-11) - 11 ( x -11)
= (x-11) (x-11)
20cm = 0.2 m
The cost
= 0.2 x 75
= $15
