Shopping sera went to the mall and made four purchases. she spent $2.85, $5.11, $7.89, and $4.15. use mental math to determine how much money sera spent at the mall.

What signals you that factoring by grouping is the best method to use when factoring a problem?

Which table shows a proportional relationship between miles traveled and gas used?

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?