Is 142.6183719 to 2 significant figures 14 or 140?

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

2/3(-6y+9x) expand each expression using the distributive property

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.