In terms of pi means to include pi in your answer. In other words, don't use 3.14 or 22/7 for pi.
GCF(24, 30, 42) = 6 I think it is.
Answer:
I believe the answer is 3/10
100 + 0.50c = 1.50c <== ur equation
100 = 1.50c - 0.50c
100 = c....so he would have to sell 100 cups of coffee to break even