Tom is leading a workshop for 15 people. He wants each person to meet every other person (shake hands once). How many handshakes occur?
?
A. 213
B. 105
C. 98
D. 210
E. 108
Answer: B
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Beginning in 2001 the price, in dollars per ounce, of gold was modeled approximately by
,
where t is the time in years since the beginning of 2001.A: Make a graph of G versus t that shows estimated gold prices for 2001 to 2010.B: A broker recommended purchase of gold as long as the price was between $400 and $700 per ounce. Add the horizontal lines 
and 
to your graph.C: During what time period was the purchase of gold advised? Give your answer in terms of t correct to two decimal places.
What will be an ideal response?
Solve the problem.The seamstress has a length of 18 feet of material on a bolt. She plans to use the material to make scarves. If each scarf requires a length of 7
inches, how many can be made? (1 foot = 12 inches)
A. 29 scarves B. 2 scarves C. 162 scarves D. 28 scarves
Factor.64x3 - 1
A. (4x - 1)(16x2 + 4x + 1) B. (4x + 1)(16x2 - 4x + 1) C. (64x - 1)(x2 + 4x + 1) D. (4x - 1)(16x2 + 1)
Factor the polynomial completely. If the polynomial is prime, so state.8z2 + 6z - 9
A. (4z + 3)(2z - 3) B. (8z - 3)(z + 3) C. (4z - 3)(2z + 3) D. prime