The cost c (in dollars) for the fuel and maintenance of a go-cart is given by c=10x+900, where x is the number of rides. It costs $25 per ride. How many rides does it take to break even?
__ rides

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.