Need those done by 33 minutes you have to use system of equations substitution thank you

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+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.