The temperature at 5pm is 20 degrees. the temperature at 10pm is -5 degrees. what is the equation

Icould really use some with this question.

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?

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x