Can someone explain this

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market

Which strategy is used by public health to reduce the incidence of food poisoning?