If x+y+100, then what does x equal in the equation 0.08x+0.15y=12 ?

Simply 8x squared + 5(7x squared- x) - 2x =

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

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.