Simple math question but im stuck on it. Tell whether the value is a solution of the inequality

Please tell me what to write down

5 - x < 8; x = -3

Aline passes through 3,7 and 6,9 what equation represents the line

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?

If sina is 4/5 then find the value of sin3a . with explanation.