A piggy bank is full of nickels, dimes and quarters worth $3.30. If there are three times as many nickels as quarters, and half as many dimes as nickels,
how many of each kind are there

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?