1. Algebra Problems… Algebra Problems… © 2007 Herbert I. Gross Set 7 part 2 By Herb I. Gross and Richard A. Medeiros next

2. The following five problems are designed to help you make sure that you have internalized the material in this presentation. We suggest that you treat these problems as if they were a test. © 2007 Herbert I. Gross After you have worked on these problems check your answers against the ones that are given. Then read through our solutions and commentary in the Problem/Solution PowerPoint Presentation. next

3. a 2 2 × 2 -3 = 2 n Problem #1 © 2007 Herbert I. Gross Solve for the value of n that makes each equation a true statement. b 2 2 ÷ 2 -3 = 2 n next

4. a (5 -1 ) 0 = n Problem #2 © 2007 Herbert I. Gross Solve for the value of n that makes each equation a true statement. b (5 -1 ) -3 = 5 n next

5. a 638.97 × 10 -4 = n Problem #3 © 2007 Herbert I. Gross Solve for the value of n that makes each equation a true statement. next b 0.000063897 = 6.3897 × 10 n next

6. a 5 × 10 4 × 3 × 10 -6 × 4 × 10 -1 Problem #4 © 2007 Herbert I. Gross Write each of the following in decimal form. next b 5 × 10 4 × 3 × 10 -6 + 4 × 10 -1 next

7. Suppose the cost of your buying groceries doubles every 10 years. If a particular grocery order costs $240 today, how much did the same order cost 30 years ago? Problem #5 © 2007 Herbert I. Gross