Note: Enter your answer and show all the steps that you use to solve this problem. *btw the note is the same thing for question 6*
1. 7x=42

6.simplify the expression 8to the 2power +9(12÷3×2)-7.

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.