This graph represents a quadratic function. What is the function's equation written in factored form and in vertex form?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

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