Use the discriminant to determine whether the quadratic equation has two unequal real solutions, a repeated real solution, or no real solution without solving the equation.x2 + 3x + 3 = 0
A. repeated real solution
B. two unequal real solutions
C. no real solution
Answer: C
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Solve the equation by factoring.x2 - 5x + 6 = 0
A. {3, 2} B. {-3, 2} C. {-3, -2} D. {3, -2}
Eliminate the parameter to obtain a Cartesian equation of the curve.x = et, y = e2t, -? < t < ?
A. x = ln y B. y = ln x C. y = x2 D. y = 2x
Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number. 2
A. 4
B. 4
C. 5
D. 1
Solve the problem.The function 
, 
, represents revenue in thousands of dollars where x represents the amount spent on advertising in tens of thousands of dollars. Find the inflection point for the function to determine the point of diminishing returns.
A. (14, 19,560) B. (38.05, 6878.37) C. (8, 16,224) D. (9.6, 17,167.1)