QuestionExample 2 There are two cell phone companies that offer different packages. Company A charges a monthly service fee of $\$ 34$ plus $\$ .05 / m i n$ talk-time. Company B charges a monthly service fee of $\$ 40$ plus $\$ .04 / \mathrm{min}$ talk-time. a. Write a linear equation that models the packages offered by both companies. b. If the average number of minutes used each month is 1,160 , which company offers the better plan?