After some training, one of the typists was told that the speed he attained had a resid-
ual of 4.3 words per minute. How should he interpret
this?
A) He types slower than the model predicted, given the
amount of time he spent training.
B) He types faster than the model predicted, given the
amount of time he spent training.
C) He can't interpret his residual without also knowing
the correlation.
D) He can't interpret his residual without also knowing
the size of other people's residuals.

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

What are the solutions of the equation? z^2 + 11z + 24 = 0 a. 8, -3 b. 8, 3 c. -8, -3 d. -8, 3