70 times .9 is 63 so 90 minus 63 is27 so it was $27
Answer:
The volume is 27 cubic cm.
Step-by-step explanation:
Answer:
look at the picture i have sent
Answer:
f'(9) = 6
Step-by-step explanation:
f(x) = 6x+7
The derivative is
f'(x) = 6
Evaluated at x=9
f'(9) = 6