1. The Bee Mobile telephone company provides a call service with a fixed cost of $20 per month, plus a variable cost of $0.15 per minute of call. a. Present a linear model, determining the total cost C for call service in the month. b. What does the slope represent in the linear model? c. What is the total cost for a client who made a total of 845 minutes during the month of August? 1. The Sunshine store is dedicated to the sale of sandals. They find that for a price of $18.00 for each pair of sandals, they are able to sell 200 pairs per month. But, if the price of each pair is $20.00, he can only sell 175 pairs of sandals. a. Assuming that the number of pairs of sandals sold can be modeled linearly as a function of the price of each pair, determine the equation that models the total cost of pairs of sandals sold in one month. b. What does the slope represent in the linear model? c. In February an employee was in charge of selling the sandals. He set a price and managed to sell 180 pairs of sandals. What was the price of the pairs of sandals?