Original price .40 increased to .90. what is %increase.

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)