Nicole went shopping for a new phone. Sales tax where she lives is 7%. The price of the phone is $21. Find the total price including tax. Round to the nearest cent.

Aregression was run to determine if there is a relationship between hours of tv watched per day (x) and number of situps a person can do (y). the results of the regression were: y=ax+b a=-0.662 b=30.418 r2=0.703921 r=-0.839

Three times the sum of a number and seven is negative thirty-six. what is the number?

How is working backward similar to solving an equation?