Answer:
8 problems per day for 12 of the days and 9 problems per day for 24 of the days
Step-by-step explanation:
C.
You are multiplying $7 by c calculators.
96 → B
substitute w = 12 into the equation D = 3w + 60
D = (3 × 12 ) + 60 = 36 + 60 = 96