4. One printing machine printed 1920 books in 40 hours this week. A second printing machine printed for 30 hours this week but printed books
at twice the hourly rate of the first machine. How many books did the
second machine print this week?

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total