Mike spent half of his allowance going to the movies. He washed the family car and earned 8 dollars. Write an equation that could be used to find the approximate amount for his weekly allowance if he ended up with 23 dollars.

Find the solution of this system of equation -7x+y=-20 9x-3y=36

According to the data set, where should the upper quartile line of the box plot be placed?

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?