Jonathan practiced playing the guitar a total of 7 hours 30 minutes last week. How many minutes of practice did he get altogether last week?

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax