Sarah owns a flower shop and can model the profits from selling springtime bouquets using this equation, where b is the number of springtime bouquets. P=-5b^2 + 450b - 1000

Which statement is true if Sarah needs to make a profit of at least $9,000?

A.
Sarah must sell between 0 and 40 springtime bouquets.
B.
Sarah must sell between 40 and 50 springtime bouquets.
C.
Sarah must sell more than 50 springtime bouquets.
D.
Sarah must sell more than 90 bouquets.

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.