Drew by chemistry book for $30 later that pic was marked down by 20% by how much has the value been decreased

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

On her first stroke, maya hit a golf ball 146 yards, 2 feet, 11 inches. on her second stroke, she hit it 163 yards, 1 foot, 2 inches. how far did the ball go all together? convert the answer to larger units whenever possible.

Find the average rate of change for the given function drom x=1 to x=2