Briana took a train that travels at a speed of 30 miles per hour. The table below
shows the distance the train has traveled
at different times since beginning its trip. Time (h) Distance (mi)
0 0
1 30
2
90

Write each expression in exponential form and find its value. 2 x 2 x 2 x 2

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%

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)