How do u do this i was gone when they taught this

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

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?

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x