The table shows the height of a ball, ​h(t)​, after t seconds. The data can be modeled using a quadratic regression equation. Time (s) 1 2 3 4
Height (ft.) 88.7 139.9 158.9 146.1
Approximately when will the ball hit the ground?

0 s

5.2 s

6.3 s

7.5 s

The distance around the lake is 2 kilometers. ifelena wants to run 14 kilometers this week, howmany laps must she run around the lake

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2