4^x-4^x-1=24,then find (2x)^x

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

50 people men and women were asked if they watched at least one sport on tv. 20 of the people surveyed are women, but only 9 of them watch at least one sport on tv. 16 of the men watch at least one sport on tv. make a a two-way table and a relative frequency table to represent the data.

What is the product? a-3/15a × 5/a-3