6 sump pumps working at the same rate drain a flooded basement in 5 1/4 hours. How long would it take 2 pumps to drain the same amount
from the basement?

There is a spinner with 14 equal areas, numbered 1 through 14. if the spinner is spun one time, what is the probability that the result is a multiple of 2 or a multiple of 5?

Which is f(5) for the function –2x2 + 2x - 3?

3x + 4y = 5 x- 3y = -7 solve by substitution