Ialso need figuring this out -

2x^2 -7x - 15

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.

[tex]5 \times1 \frac{12}{13} [/tex] me

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?