What could be the length of the longer base of the scaled copy of the trapezoid?

According to the normal model, what percent of receivers would you expect to gain fewer yards than 2 standard deviations below the mean number of yards

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Enter the missing numbers in the boxes to complete the table of equivalent ratios.time (min) distance (km)? 36 9? 1512 ?