1-3 practice
properties of numbers
evaluate each expression. name the property used in each step.
1.2 + 6(9-32) - 2
2.5(14-39-3) + 4× 1/4

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.

The volume of a spherical hot air balloon v(r) = 4 3 ? r3 changes as its radius changes. the radius is a function of time given by r(t) = 3t. find the instantaneous rate of change of the volume with respect to t at t = 2.