Algebra( Week 21 Evaluation) 1. If 12x is deducted by 15y, and the difference is then multiplied by , which of the following is the result? 2. Which of the following is the correct representation of phrase "8 more than 9 times x"? 3. Jay is now 15 years old, and is 8 years older than Anne. In how many years will Jay be 3 times as old as Anne is now? 4. 8 years ago, Anne was 2 years older than Larry is now. If Larry's present age is X, what will be Anne's age 7 years from now? 5. Rene is 4 years younger than Jay. Michael is one third as old as Jay is now. If Michael will be 11 years old 6 years from now, how old is Rene now? 6. 4 years from now, John will be 4 times as old as Jessica is now. If Jessica's present age is Y, what was John's age 4 years ago? 7. Josh is 4 times as old as Jane is now. 10 years from now, he will be 3 times as old as Jane then. How old is Jane now? 8. In a certain class, the number of students who have five letter or less in their last names is 4 times of the students who have more than five letters in their last names. If there are a total of 30 students, how many students are there in the class who have five letters or less in their last names? 9. There is a larger circle C with an area of 100π. You are asked to draw two circles A and B without overlapping within circle C. What is the largest possible sum of circumferences of A and B?
10. 4 years from now, Joe will be 3 times as old as Anne is now. If Joe's present age is Y, what will be Anne's age 9 years from now? |