Which equation represents a linear function? a. y = 3 x 2 − 5
b. y = 64 x + 12
c. y = 8 x 3 + 27
b. y = 15/x − 8

Aweekly newspaper charges $72 for each inch in length and one column width. what is the cost of an ad that runs 2 column inches long and 2 columns wide? its not 288