1. the athletes were either running or jumping. if the ratio of the number of runners to the number of jumpers was 9 to 5 and 2170 were observed, how many were jumpers?
2. sam found that if the product of 5 and a number is increased by 8, the result is 10 more than the product of 3 and the number. what is the number?
3. if g(x) = -4 x^2 - 3, find g(-3)
4. solve for y: 3x + 4y = 8 -y
