Me ! applying linear equations model each situation with a linear function. 1.a gas station that fills portable propane tanks (such as are used for camping and for outdoor barbecues) charges $2.60 per gallon. 2.the weight of a bucket of golf balls is a function of the number of balls, each of which weighs 1.6 oz. the bucket itself weighs 2 lb. 3.it costs a farmer $110 to bring 150 pounds of tomatoes to market, and the tomatoes sell for $2 per pound. the difference between the income from sales and the cost is the farmer’s profit. 4.a newly-started high school hopes to enroll 80 students in its first year and to increase enrollment by 40 students per year over the next five years. write a linear function for each graph, and state and label the slope and the y-intercept in each case. 5. a caterer charges a flat fee to put on an event, plus a per-person cost based on how many guests attend. equation: