The perimeter of a rectangle is 36 inches. if the width of the rectangle is 6 inches, what is the length?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Use sigma notation to represent the following series for 9 terms.