What is the test statistic to test the significance of the slope in a regression equation? Od-statistic Z-statistic O F-statistic O t-statistic

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.)

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees