Write an algebraic expression to answer each question.
1. Let B be the time now.
a. What was the time 3 hours ago? (__________________________
b. What is the time after 5 hours? _________________________
2. Let X be Lola Deling’s age now
a. What was her age 30 years ago? ___________________________.
b. What will be her age after 5 years? ___________________________
3. Let N be a number.
a. What is the square of the number? __________________________