The radius of a circle is 21 cm, what is the area?​

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Question 3 (essay worth 10 points) (03.06 mc) part a: max rented a motorbike at $465 for 5 days. if he rents the same motorbike for a week, he has to pay a total rent of $625. write an equation in the standard form to represent the total rent (y) that max has to pay for renting the motorbike for x days. (4 points) part b: write the equation obtained in part a using function notation. (2 points) part c: describe the steps to graph the equation obtained above on the coordinate axes. mention the labels on the axes and the intervals. (4 points)

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)