Johnny did some work for his grandpa. he worked for 7 hours on friday and 6 hours on saturday. his grandpa paid him $91 for the work. how much money did johnny earn per hour?

Rounded to the nearest tenth, what is the value of x

If $190 is invested at an interest rate of 11% per year and is compounded continuously, how much will the investment be worth in 4 years? use the continuous compound interest formula: a = pert

Find the scale factor and ratio of perimeters for a pair of similar trapezoids with areas 49 cm squared and 36 cm squared.