Astudy was done to investigate the population of polar bears over time. the correlating linear model is shown below, where x represents the number of years after 1955, and y represents the number of polar bears. interpret the y-intercept.
y = 5,000 + 500x
a. there were 10,000 polar bears in 1955.
b. there were 1,000 polar bears in 1955.
c. there were 5,000 polar bears in 1955.
d. there were 500 polar bears in 1955.

29. explain the error a student found the product of 8 × 10 6 and 5 × 10 9 to be 4 × 10 15 . what is the error? what is the correct product?

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?