Question

A local phone company offers a cell phone plan that has a fixed cost per month and a cost related to the number of text messages sent. The fixed cost is $20 and each message sent costs 10€. Represent the relation between the total cost and the number of text messages sent, as many different ways as you can. ​

Answer 1

20 + 10(x) = total cost

Explanation:

x represents the number of messages, so you multiply it by 10. 20 is a fixed number so you just add it without changing its value.