On Monday, Jake could lift 40 lbs. One month later he could lift 85 lbs. What is the percent of change in the number of pounds he can lift?

And employee salary increased by $4500 which represents a 15% raise what is the rate of the increase

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

Select all the expressions that will include a remainder.