1.Which of the following correctly uses absolute value to show the distance between −70 and 15? a)|−70 − 15| = |−85| = −85 units
b)|−70 + 15| = |−55| = 55 units
c)|−70 − 15| = |−85| = 85 units
d)|−70 + 15| = |−55| = −55 units

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.