OK Mastering the OSTP in Grade 7 math Chapter 7

Tom earns $400 per week before taxes are taken out. His employer takes out a total of 31% for state, federal, and Social Security taxes. Write an expression that will help Tom figure out his net pay.

Simplify the following expression using x = 2 and y = 5.

3x + 4y − 1

A plumber charges $87.00 per hour plus a $15.00 service charge. If a represents his total charges in dollars, and b represents the number of hours worked, which formula below could the plumber use to calculate his total charges?

Which expression is a number divided by the sum of nine and two?

Bell computers announced to its sales force to expect a 2.4% price increase on all computer equipment next year. A certain sales representative wanted to see how much the increase would be on a computer, c, that sold for $2,600 last year. Which expression below will help him find the cost of the computer next year?