Answer:
B: $2.50
Step-by-step explanation:
Step 1: form an equation
126 = 12(8 + x)
Step 2: isolate the x
126/12 = 8 + x
126/12 - 8 = x
Step 3: solve
10.5 - 8 = x
2.5 = x = raise per hour
3.3 % chance that will randomly pick tallest
Because he ended up paying $24 more than the actual price of the drill, this is the amount of interest he paid.
In total, the repairman pays $324 in 6 equal payments. So, each payment was

.