Car a can go 332 miles on 12.5 gallons of gasoline. car b can go 304 miles on 10.5 gallon. which car has better gas mileage? how much better? round to the nearest tenth.

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.