write an algebraic expression or equation for the following problems write your answers on your answer sheet.

Answer with Step-by-step explanation:
1) a - b
(Algebraic expression)
2) y + 5 = 17
(Algebraic equation)
3) xy + 3
Let the two unknown numbers be x and y
(Algebraic expression)
4) 4 hours · y meter/hour or 4y meters
(Algebraic expression)
5) (5 + 11) + k or 16 + k
(Expression)