Mustafa's horse ate 6,400 pounds of hay last year. How could Mustafa determine the number of tons of hay his horse ate last year? A- by dividing 6,400 by 16
B- by multiplying 6,400 by 16
C- by dividing 6,400 by 2,00
D- by multiplying 6,400 by 2,00

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.