Solve.xy - x2 = -20x - 2y = 3
A. x = -5, y = -1; x = 8, y = 
B. x = 5, y = 1; x = - 
, y = -8
C. x = 5, y = 1; x = -8, y = - 
D. x = -5, y = -1; x = 
, y = 8
Answer: C
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The circulation M, in thousands, of a certain magazine t years after 2010 is given by
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This formula is valid over the period from 2010 to 2015 only.A: Make a graph of M versus t.B: There are two values of t that have a circulation of 9 thousand. Find both of them.C: Explain in practical terms what is happening to magazine sales over the period from 2010 to 2015.
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Round your answer to two decimal places if necessary.
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What will be an ideal response?
Suppose you are taking a true-false test with ten questions. If you guess at the answers on this test, find the probability of getting fewer than three correct answers. Please round your answer to four decimal places. ? P = __________
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A coffee store has available 75 pounds of A grade coffee and 120 pounds of B grade coffee. These will be blended into 1 pound packages as follow: an economy blend that contains 4 ounces of A grade coffee and 12 ounces of B grade coffee and a superior blend that contains 8 ounces of A grade coffee and 8 ounces of B grade coffee. Using x to denote the number of packages of the economy blend and y to denote the number of packages of the superior blend, write a system of linear inequalities that describes the possible number of packages of each blend. Graph the system and label the corner points.
What will be an ideal response?
The graph of a logarithmic function is shown. Select the function which matches the graph.
A. y = 1 - log2x B. y = log2(-x) C. y = log2x D. y = -log2x