1.Suppose the sales of a particular brand of appliance are modeled by the linear function S(x)=70x+3200, where S(x) represents the number of sales in year x, with x=0corresponding to 2002. Use this model to predict the number of sales in 2018.

2.Suppose that the sales of a particular brand of appliance satisfy the relationship S(x)=190x+1800,where S(x) represents the number of sales in year x, with x=0 corresponding to 1990. For what years will sales be between2370and3320?

3.Jim wants to plan a meal with148grams of carbohydrates and1240calories. If green beans have 7 grams of carbohydrates and 30 calories per half-cup serving and french fried shrimp have 9 grams of carbohydrates and 190 calories per three-ounce serving, how many servings of green beans and shrimp should he use?

4.The demand equation for a certain product is P=35-0.001x, where x is the number of units sold per week and P is the price in dollars at which one is sold. The weekly revenue R is given by R=xP.What number of units sold produces a weekly revenue of$60,000?