A car share company's "occasional driving" plan has a $50 annual fee and charges $8 per hour for a car. Another plan from the same company has a monthly fee of $50 but charges only $7.20 per hour. a. How many hours of driving in a year would result in equal total costs for both plans?
b. If you use a car for 200 hours in a year, which plan is the better deal?

Twelve friends shared 8 small pizza equally.how many pizzas did each person get?

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.