Find an equation of the tangent line at the indicated point on the graph of the function.y = f(x) = x - x2, (x, y) = (-1, -2)
A. y = 3x + 1
B. y = -x - 1
C. y = -x + 1
D. y = -3x + 1
Answer: A
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Graph the inequality.36y2 - 16x2 ? 576
A. 
B. 
C. 
D. 
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. An insurance company is willing to insure the concert for $150,000 against rain for a premium of $30,000. If he buys this policy, what are his expected earnings from the concert?
A. $180,000 B. $300,000 C. $270,000 D. $239,400
Tell whether the statement is true or false.{1, 6, 4, 7} = {4, 1, 6}
A. True B. False
Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range.y = 2x2 - x + 5
A. D: all real numbers; R: (y ? 5.125) B. D: all real numbers; R: (y ? 5) C. D: (y ? -0.25), R: (y ? 4.875) D. D: all real numbers; R: (y ? 4.875)