23. the average wind speed increased 19 mi/h from 8 a. m. to noon. the
average wind speed decreased 5 mi/h from noon to 4 p. m. at 4 p. m., the
average wind speed was at least 32 mi/h. what is the minimum value of
the average wind speed at 8 a. m.?

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)

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

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250