Yoko purchased a prepaid card for $20. Long distance calls cost 6 cents a minute using this card. Yoko used her card only once to make a long distance call if the remaining credit on her card is $17.84, how many minutes did her call last

An appliance store sells lamps at $95.00 for two. a department store sells similar lamps at 5 for $250.00. which store sells at a better rate

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?

Two numbers have a sum of -19. one number is x. what expression represents the other number?