Find the sum of the arithmetic series using a formula.The first 30 terms of the series whose terms are an = 10 - 3n
A. -1095
B. -995
C. -1295
D. -2190
Answer: A
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Solve the rational inequality and graph the solution set on a real number line. 
? 2
A. (-4, 8]
B. (-?, -8] ? (-4, ?)
C. [-8, -4)
D. (-?, -4) ? [0, ?)
Estimate the value of the quantity.The graph below shows the rate of change of the price of a stock (in dollars per share per week) over a period of 6 weeks. Estimate the total change in dollars per share of the stock during this period. Use rectangles with widths of 1 week and let the function value at the midpoint of the rectangle give the height of the rectangle.
A. $2.00/share B. $2.20/share C. $1.60/share D. $0.90/share
Add. Do not use a number line except as a check.-9.9 + 5.9
A. -4 B. -15.8 C. 4 D. 15.8
Use sum-to-product formulas to rewrite the expression as a product.cos 5x + cos 3x
A. 2 cos 4x sin x B. 2 sin 4x sin x C. 2 cos 4x cos x D. 2 cos 4x