Someone please help me with this. Functions f(x) = x^2+6x+5 and g(x)=(x+w)^2-4 are equivalent.
The value of w is ___
A. 4
B. 3
C. 5
D. 1

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.