Make like units, and then add. *
1 1/2+2/5

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Mr. thompson is on a diet. he currently weighs 260 pounds. he loses 4 pounds per month. what part of the story makes the relationship not proportional?

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?