John bought ten books all at the same price. the total cost of the books was $242. he gave two books to his friend. what was the value of the books that he gave to his friend?

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

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

How to find the exponential function y=ca^x, with points (1,2) and (2,1)