Atennis player hits a serve that cannot be returned 45 percent of the time. out of 300 serves, how many can you predict will not be returned?

Based on what i know about mean, this doesn't add up.

Which function families have maximums and minimums? 1.)linear absolute value functions and exponential functions 2.) linear absolute value functions and quadratic functions 3.) linear absolute value functions and linear functions 4.) linear absolute value functions and constant functions

Agraph of a trapezoid can have diagonals with slopes that are negative reciprocals and two pairs of adjacent sides that are congruent, true or false, and why