Yolanda works mowing lawns and babysitting. She earns $8.20 an hour for mowing and $7.40 an hour for babysitting. How much will she earn for 6 hours of mowing and 7 hours of babysitting?

Arectangle plot measure 20ft. by 30ft. a 3-ft.-wide sidewalk surrounds it.find the area of the sidewalk.

The gdp is $1,465.2 billion. the population is 249,793,675. find the per capita gdp.

Judy garland electronics operate on a net-profile rate of 20% on its printer cables. if the markup is $8.95 and the overhead is $4.31,find the net profit and the selling price? use the net-profit rate formula to solve this problem.