Acell phone company offers two talk and text plans. the company charges a monthly service fee of $20 for
either plan the customer chooses: customers that choose talk and text plan a are charged five cents a minute
and twenty dollars for 250 texts. customers that choose talk and text plan b are charged ten cents a minute
(first 100 minutes free) and fifteen dollars for 200 texts. the equation: c = .10(m - 100) + 15 + 20 can be used
to represent how much a customer would spend monthly for the minutes used. how many minutes must a
customer use for the cost of the plans to be the same?

Consider the graph of the exponential function y=3(2)×

2x minus y equals 6, x plus y equals negative 3

Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.