An ultra marathon athlete can run long distances at an average speed of 6 3/4 miles per hour. at this rate, how long will it take him to run 50 miles?

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

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?