The intensity (i) of a sound wave varies jointly as the square of its frequency (f), the square of its amplitude (a), the speed of sound (v), and the density (d) of the substance the wave is traveling through. which shows this relationship using k as the constant of proportionality?

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?