Find an equation for the graph.
A. y = -2 cos 
B. y = -2 sin (3x)
C. y = -2 cos (3x)
D. y = -2 sin 
Answer: C
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Solve the problem.Find the number of units that must be produced and sold in order to yield the maximum profit, given the following equations for revenue and cost:R(x) = 50x - 0.5x2C(x) = 10x + 3.
A. 43 units B. 40 units C. 60 units D. 41 units
Solve the problem.The half-life of radium is 1690 years. If 150 grams is present now, how long (to the nearest year) till only 100 grams are present?
Fill in the blank(s) with the appropriate word(s).
Solve the problem.The Lorenz curve for the income distribution in a certain country is given by the function 
. Find the Gini index of income concentration. Round the answer to three decimal places and interpret the results.
What will be an ideal response?
Write each whole number in standard form.Eight thousand, one hundred sixty-seven
A. 81,067 B. 810,067 C. 800,167 D. 8,167