Calvin paints and posters he charges $50 for a large poster and $30 for a small poster last week he saw three large posters and six small posters he also had to spend $40 to buy more paint how much momey does Calvin have left

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

Can someone me with my math problem pls my teacher is on my back about this

Out of the 150 students at a summer camp, 72 signed up for canoeing. there were 23 students who signed up for trekking, and 13 of those students also signed up for canoeing. use a two-way table to organize the information and answer the following question: approximately what percentage of students signed up for neither canoeing nor trekking?