Johns popcorn sales vary directly with the time he spend selling. if john made $2300 of popcorn salee. s over 2 years, find the amount he would make after 9 years. write a direct variation equation and solve.

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