Lydia is working at a supermarket. Her weekly pay is modeled by the piecewise function S(h) = (8,0 12h -160, h > 40 where S represents her
salary, in dollars, and h represents the number of hours worked per week.
a. Lydia worked 36 hours through Friday. Deborah asked her to cover her shift on Saturday, which was nine hours long. How much more
money will Lydia earn by working 45 hours for the week, rather than 36 hours?
b. Lydia needs to earn $500 next week in order to pay her rent. How many hours would she have to work in order to earn $500?

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.