The total income for the Mr. Johnson's apartment building can be represented by the equation 6r - 3c - 2p, where r is the amount of rent paid by each tenant, c is the cost of the cable bill,
and p is the cost of the phone bill. If the rent is $450, the cable bill is $90 and the phone bill is
$40, what is the total income for Mr. Johnson?

A. $2,000
B. $2,350
C.$3,150
D. $2,430

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done