Two gallons equals how many pints?
a. 12
b. 20
c. 16
d. 8

List the elements of the set in roster notation. (enter empty or ∅ for the empty set.) {x | x is a letter in the word hippopotamus}

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

What is the y intercept of f(x)=(1/2)^x?