By how much should a machinist decrease the length of a rod that is 4.78 cm long if the length must be within 0.02 cm of 4.5 cm?

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Write the following as a base and exponent

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.