PLZ help An image that is 5 inches wide on the transparency is 25 inches wide on a screen. What is the scale factor?

What are “like terms”? why can we only add like terms?

What is the value of x when x + 7 = 21?

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.