All the members of a construction crew work at the same pace. four of them working together are able to pour concrete foundations in 32 hours. how many hours would this job take if the number of workers decreased 2 times increased 2 times increased 4 times plz plz will give all points

What is the factored form of the following expressions? d^2 – 13d + 36

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

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.