Devon purchased tickets to an air show for 7 adults and 2 children. the total cost was $173. the cost of a child's ticket was $8 less than the cost of an adult's ticket. find the price of an adult's ticket and a child's ticket.
show work!

Ineed me i stuck and i don’t want to get it wrong

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

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.