To the nearest tens how many centimeters 21.4 cm does the tip of the minute hand of the clock shown travel each hour

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Which table shows a proportional relationship between miles traveled and gas used?

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?