If f(x) = x2, and
g(x) = x - 1, then
f(g(x)) = x2 + [? ]x + [ ]

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81