Solve the following word problems:

1. marietta was given a raise of $0.75 per hour, which gave her a new wage of $12.25 per hour. write and solve an equation to determine marietta’s hourly wage before her wage. (show which properties you used in each step)

2.the formula p=8n-30gives the profit p when a number of items n are each sold at $8 and expenses totaling $30 are subtracted.

a. if the profit is $170, how many items were bought?

b. if the same number of items were bought but the expenses were changed from $30 to $40, would the profit increase or decrease and by how much? explain.