How many gallons of 12% salt solution should a biologist add to 5 gallons of 15% salt solution to get a 14% solution? WILL MARK BRAINLIEST IF ANSWERED WITHIN 15 MINUTES

Can any one me with the answers to these questions asap?

How can you construct perpendicular lines and prove theorems about perpendicular lines

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?