Answer:
A) C= 10x +5
C) The slope is the delivery cost per pizza without the additional delivery charge.
Step-by-step explanation:
Please see the attached picture.
x^12
We know that a^b* a^c = a^(b+c)
x^5 * x^7 = x^(5+7) = x^12
now with that template in mind
70%
60+80=140
140/2=70