jamal calculated that it costs $0.43 per mile and $4.00 per day to operate his car. if jamal drive m miles over d days , which equation below expresses the cost ,c of driving the car , in terms of m and d?

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.