Length in centimeters of a 1 foot ruler

30 pts, will mark brainliestwhat is the period of the sinusoidal function? (picture 1)what is the minimum of the sinusoidal function? (picture2)what is the maximum of the sinusoidal function? (picture 3)

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?