Every year, Mary and her family rent a cottage on a lake for their summer vacation. The first year, Mary paid $500. The second year she paid $515, and the third year she paid $530. If this pattern continues, how much money, total, will Mary have spent to rent the cottage every year for 20 years? You must show your work to receive full credit.

Do 12/14 and 8/10 have the same value? explain your answer.

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent. the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour. what is the cyclist average rate for the round trip in miles per hour ?