Maximize z = 6s + 4a subject to: 12s + 10a ≥ 100 6s + 8a ≥ 64 7s - 3a ≥ 36 what is the optimal solution and the surplus associated with the first constraint?

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