Which of the following graphs represents the solution set for y < –2x – 4?

Is the following relation a function? x y 1 4 −1 −2 3 10 5 16 yes no

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

The circumference of a circle is 5 pi cm. what is the area of the circle?