Martine earned $162 for working 18 hours last week. if she earned $207 this week, how many hours did she work?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.