A train travels 170 miles in 4 hours. The train is traveling at a constant rate of speed. How many miles per hour does the train travel? Record your answer. Be sure to use the correct place value.

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.

Which of the following expressions is equal to 2x^2+8

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?