Which algebraic expression models the sum of 3 coins and c coins?

Find two rational expressions that have the difference of 2-n/n-4

Write the sentence as an equation. z plus 372 is equal to 160

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.