A circular patch of grass grew so that its radius increased by 2 feet. The formula below can be used to determine the circumference of the circle C = 2 (r + 2)

What is the same formula rewritten for r in terms of C?

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Twelve less than a number is at most 20