The phone company Ringular has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. If a customer uses 350
minutes, the monthly cost will be $137. If the customer uses 900 minutes, the monthly cost will be
$302.
A) Find an equation in the form y = mx + b, where x is the number of monthly minutes used and
y is the total monthly cost of the Ringular plan.
Answer y =
B) Use your equation to find the total monthly cost if 830 minutes are used.
If 830 minutes are used, the total cost will be
dollars.