Solve the system of equations below by graphing both equations with a pencil and paper. what is the solution?

y = -x + 21
y = -2x + 30

Write the rational number in lowest terms 99/-15

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?

Timmy uses 1 1 2 cups of sugar for every 2 gallons of lemonade he makes. how many cups of sugar would timmy use if he makes 13 gallons of lemonade?