4. a. Here is an equation: y = 2x + 1. What does this equation mean to you, if you had to describe it to someone else? b. Use the equation given in part a. When x = 1, what is y? c. Use the equation given in part a. When y = 5, what is x?

5. Please solve the following problems. You may use a calculator. Report the answers rounded to two decimal places. a) 45 of the 200 flowers are yellow. What percentage of the flowers are yellow?

b) 550 divided by 200 =

c) 100 of the 500 books are in paperback. What percentage of the books are in paperback? What percentage are not in paperback?

6. Please rearrange the numbers in the following list from smallest to largest.

35, 1, 27, -4, -50, 46, -4.3