Find a formula for the expression. Use sigma notation.
n
A. 
B. 
C. 
D. 
Answer: C
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Suppose that ? is in standard position and the given point is on the terminal side of ?. Give the exact value of the indicated trig function for ?.(0, -9); Find cos ?.
A. 0 B. 9 C. 1 D. -9
Solve the problem.The expression 6.45t + 6.9 can be used to predict the average number of e-mail messages, in billions, each day in Country X, t years after 2000. Predict the average daily number of e-mails in Country X in the year 2,006.
A. 12,945.6 billion B. 45.6 billion C. 19.35 billion D. 31.8 billion
Factor completely. If the polynomial is prime, state so.t3 + 729
A. (t + 9)(t2 + 81) B. (t - 729)(t + 1)(t - 1) C. (t - 9)(t2 + 9t + 81) D. (t + 9)(t2 - 9t + 81)
Provide an appropriate response.How many solutions are there to a dependent system?
What will be an ideal response?