Sandi buys 2 fewer packages of pencils than p packages of pens. pencils costs $2.45 per package and pens costs $3 per package. what does the expression 3p + 2.45(p − 2) represent? the expression 3p + 2.45(p − 2) represents the a. total cost of pens and pencils b. cost of pens c. number of pens and pencils d. cost of pencils

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.