Melissa wants to buy a new pair of shoes that have an original price of $45. melissa has a coupon for 20 percent off to use on them, which amounts to a discount of $9. if sales tax is 9 percent on the final price of the shoes, how much tax will she need to pay?
a.$3.24
b.$4.05
c.$4.86
d.$4.95

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

Ms. ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms. ortiz charge per kilogram of tomatoes to make on a load of tomatoes?