The produce display at a grocery store indicated that apples were 3 for $1.00 and oranges were 5 for $3.00, but at the cash register both fruits were priced at 50 cents each. If Tammy bought a dozen apples and 8 oranges, which statement about the total amount Tammy was charged is TRUE? 1. Tammy was overcharged $2.00.
2 Tammy was undercharged $0.80
. 3 Tammy was overcharged $1.20.
4 Tammy was charged the correct amount.

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.