- 1. 6250, 3750, 2250, 1350..... This sequence is:
A) Geometric
B) Neither
C) Arithmetic
- 2. -53, 46, 145.... This sequence is:
A) Neither
B) Geometric
C) Arithmetic
- 3. 3, 12, 23, 36.... This sequence is:
A) Arithmetic
B) Exciting!
C) Geometric
D) Neither
- 4. In an arithmetic sequence, t(7) = 2, t(19) = -82. Find the formula for t(n). Include "t(n) =" in your answer.
- 5. You are adding two fractions with denominators 10x and 15xy. The best common denominator to use is:
A) 150xy
B) 5x2y
C) 150x2y
D) 25xy
E) 30xy
- 6. In a geometric sequence, t(0) = 44 and t(1) = 484. Please find t(5).
- 7. y = x2 - 28x + 13. What is the range?
A) y ≥ 196
B) y E R
C) y ≥ 13
D) y ≥ -183
- 8. y = 9/(14x-5) - 12. What is the range?
A) y > 9/14
B) y E R
C) y ≠ 0
D) y ≠ 5
E) y ≠ -12
- 9. A virus at first infects 66 people and then begins spreading, increasing by 29% each week. How many people will be infected after 13 weeks? Round your answer to the appropriate whole number of people.
- 10. You are buying a new bird cage for $650. All bird cages are 11% off this week! You also have a 10% off coupon! Sales tax is 6.2%. What will your final cost be? Include the $ sign in your answer and round cents appropriately.
- 11. Please factor: 9x2 - 49y2.
A) (3x - 7y)2
B) Does not factor
C) xy(9x - 49y)
D) (3x - 7y)(3x + 7y)
E) (3x - 7)(3 + 7y)
- 12. 3.1, 4.3, 5.5, 6.7..... Find the formula for t(n).
A) t(n) = 2.2n + 2.2
B) Impossible, decimals are not allowed in this type of problem.
C) t(n) = 3.1(1.2)n
D) t(n) = 1.2n + 3.1
E) t(n) = 3.1n + 1.2
- 13. y = 17x - 123.5. What is the domain?
A) x E R
B) x ≥ 17
C) x ≠ 17
D) x ≥ -123.5
- 14. A certain amazing superball is dropped from 1000 feet and bounces back 777 feet. How high will this ball be after its 12th bounce? Round to 2 decimal places and include "feet" in your answer please.
- 15. In an arithmetic sequence, t(8) = 145 and t(50) = 607. Please find t(129).
- 16. f(x) = 3(2x + 1)2 - (3x + 4) + 11. What is f(6)?
- 17. y = (x + 10)(x - 4). The range of this function is....
A) y E R
B) x E R
C) y ≥ -49
D) y ≥ -40
E) y ≠ 0
- 18. Solve the system: -5x + y = 32 ::::::::::::::::::::::::::: 2x - 9y = 13. Please express your answer as a data point, with parentheses. Thank you.
- 19. Take a look at a problem like this: (2x - 16)(x + 13) = (x + 5)(x - 11). To solve this problem, you would absolutely need which of the following?
A) Factoring
B) Zero Product Property
C) Quadratic Formula
D) Luck
E) Law of Sines
- 20. Here is a sequence: 8, 20, 50, 125... What is its formula?
A) t(n) = 125(0.4)n
B) t(n) = 8(2.5)n
C) t(n) = 2.5(8)n
D) t(n) = 12n + 8
E) t(n) = 20n
- 21. Please take a moment here to list your partner's name, and something cool you have learned about him or her:
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