Three arithmetic means between 3 and -13

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.