Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 741. Find a linear equation which fits this data.
A. y = 2.7225x + 533.25
B. y = -3.025x + 529.25
C. y = 2.7225x - 533.25
D. y = 3.025x + 529.25
Answer: D
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Find the global maxima and minima of the function on the given domain.
on the closed triangular region with vertices 
and 
A. Global maximum: 3 at 
global minimum: 0 at 
B. Global maximum: 6 at 
global minimum: 3 at 
C. Global maximum: 9 at 
global minimum: 3 at 
D. Global maximum: 6 at 
global minimum: 0 at 
Convert to a percent.
A. 90% B. 95% C. 80% D. 100%
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 - 6x + 9 = 0
A. repeated real solution B. two unequal real solutions C. no real solution
Factor.6y4 - 5y2 - 6
A. (2y2 + 1)(3y2 - 6) B. (6y2 - 3)(y2 + 2) C. (2y2 - 3)(3y2 + 2) D. (3y - 2)(2y + 3)