Write and solve an equation that the model represents

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Solve for x where 0 equation: cot^2x+2cotx+1=0