Write an expression that is equivalent to 8 using each of the following numbers and symbols once in the expression. 7 7 7 2 + ()
(the 2 is an exponent)

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.)

X-10/4 when x = –18 a 7 b –2 c –7 d 2

Which of the following vectors are orthogonal to (2,1)? check all that apply