2x squared + 10x - 7 = 0

Cody worked 42.5 hours per week in july. this is 12.25 hours more per week than he worked in june.how many hours did cody work per week in june?

How many times larger is 9 × 10^8 than 3 × 10^-5? a. 3 × 10^13 b. 3 × 10^-40 c. 3 × 10^-13 d. 3 × 10^3

If you want to place a 10 1/2 inch wide picture frame in the center of a 4ft wall. how much space will be in each side of the picture? answer step-by-step : )