9. What kind of sequence is =, -1, _ '6'9'17 .? A. Arithmetic C. Geometric B. Harmonic D. Fibonacci 10. Find the sum of the arithmetic series: 8, 12, 16, 20, 24, 28, 32, 36 A. 167 C.176 B. 177 D.168 11. If 2x + 3x + 4x + 5x + ... + 41x = 1,720, what is x? A. 4 C. 3 B. 2 D. 1 12. How many boxes of milk are needed in Gaisano grocery store display if they want to set up a stack of 15 boxes at the base of the triangle and one box at the top? A. 180 boxes C. 120 boxes B. 30 boxes D. 15 boxes 13. Express the sum using sigma notation: - 3+ 8 -17 + 32 A. Ek=1 (-1)k-1 (k2+ 2*) C. Ek=1 (-1)* (2* + k) B. Ek=1 (-1)* (k2 + 2*) D. EK=1 (-1)* (k2 + 3) 14. Evaluate the sum of )=2 10 - 5n. A. 50 B. - 50 C. 55 D. -55 15. Evaluate Xk-, (-1)* 2k A. - 8 B. 6 C. 8 D. 10 16. Express the sum 2 + + += + using sigma notation k+1 A. EK=1 K C. LS (k+1)(-1)* k B. Ek=1 k+1 2+K D. Ek=1 k