It costs $5 per hour to rent a snowboard from a certain ski rental company, plus a $50 deposit. Another ski rental company
charges $10 per hour to rent a snowboard, plus a $25 deposit. For what
number of hours is the cost to rent a snowboard the same at each
company? What is the cost of renting a snowboard for this number of
hours?
und Solve Sys

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.