Points A and B are to be mapped onto a number line according to two equations. The solution to the equation 2 = −5 is the coordinate of point A. The solution to the equation 8 = − 0.5 is the coordinate of point B. (a) Solve the first equation to find the coordinate of point A. Show your work. (b) Solve the second equation to find the coordinate of point B. Show your work. (c) Determine the distance between points A and B. Explain.

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.