What percent of 50 is 18

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

James is playing his favorite game at the arcade. after playing the game 33 times, he has 88 tokens remaining. he initially had 2020 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