NEED HELP question :

Refer to the above Participation of State Park Users table. What percent of the survey population is between the ages of 18 and 45 and participates in camping? Round your answer to the
nearest tenth.

•18%
•22%
•15%
•19%

Find the slope of a line given the following two points

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer