Will is 12 years older than mathew. next year will will be three times as old as mathew. how old is mathew?

How is working backward similar to solving an equation?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

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.