ASSIGNMENT
27. Critical Thinking How long will it take you to double your principal when you deposit it into an account that earns 10% simple annual interest? Explain how you found your answer.
28. Challenge At the start of every year, you deposit $3000 into an account that earns 7% interest compounded annually.
a. What is the balance at the end of the second year? third year?
b. Will you have enough money at the end of the fifth year to buy a car that costs $18,000? Explain your reasoning.
Solve the equation. Check your solution. (Lesson 3.3)
29. 5x+ 9 = 2x+ 6
30. —5y — 13 = 7 — 15y Find the least common multiple of the numbers. (Lesson 4.4)
31. 3, 7
32. 9, 45
33. 12, 18
34. 40, 50
35. Video Game You buy a video game that is on sale for 15% off the original price of $35. Find the sale price. (Lesson 7.6)
36. Multiple Choice A $1200 bond earns 8.5% simple annual interest. What is the interest earned after 15 months? A. $15.30 B. $127.50 C. $1275 D. $1530
37. Multiple Choice You deposit 53500 into an account that earns 10% interest compounded annually. What is the balance after 2 years? F. $700 G. $4200 H. $4235 I. $7000
