Find the intervals where f(x)=-x^2 +3x is increasing and decreasing.

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Can anyone me with 32,33,36,37,and 40.

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.