Last week Henry loaned a friend $15 from his wallet. This week Henry loaned the friend another $7. In dollars, what is the change to Henry's wallet balance?

Which of the following graphs could represent a cubic function?

Rationalize the denominator- 12x/√x-10

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.