Which equation represents a function? a. y2 + x = 6 b. y4 + x3 = 3 c. y – x2 = 4 d. y2 – x2 = 7 e. y2 + x2 = 7

The monthly texting plan of all star cell is $11 per month and $0.25 per text. the monthly texting plan of top line cell is $14 per month and $0.15 per text. a student wants to set up a system of equations to find the number of texts for which the total monthly cost of the two companies is the same. he uses the variables x and y. he lets y represent the total monthly cost. what will x represent? x = number of texts x = cost of the total number of texts x = total monthly cost x = cost of each text