Which expression represents a number that is fourth as great as 10 - 2 ?

Is this a polynomial function? i need to know asap

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?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.