Can somebody please help me

At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)