On Labor Day, Ross and his brothers went fishing to the Chaumont River, Ross took home 15 catfish, which amounted to three-fourth of the total catch. What was the total catch made by them that
day?

Given the graph below state whether or not the relation is a function, and give the domain and range.

Solve 2x+y=3 x+y=5 in substitution method

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.