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 + 5x + 6 = 0
A. repeated real solution
B. two unequal real solutions
C. no real solution
Answer: B
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?Which of the following is not true about subtraction of integers: ?
A. ?If a> b, then a - b> 0 B. ?If a< b, and b is positive, then a is negative. C. ?Given that p represents a positive unit and n represents a negative unit, 3 - 5 can be represented as follows: pppppnn subtract ppppp equals nn. D. ?Given that p represents a positive unit and n represents a negative unit, 4 - (-3) can be modeled as follows: pppppppnnn subtract nnn equals positive 7. E. ?Using a number line, one can find the 3 - 4 by starting at 3 and moving 4 to the left to result in –1.
Identify and graph the polar equation.r2 = 2 sin(2?) 
A. 
rose with four petals
B. 
rose with four petals
C. 
lemniscate
D. 
lemniscate
Let f(x) = 8x2 - 5x and g(x) = 7x + 9. Find the composite.g[f(k)]
A. 392k2 + 973k + 603 B. 392k2 - 973k + 603 C. 56k2 + 35k + 9 D. 56k2 - 35k + 9
Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of feasible points. 
z = -5x - y. Find maximum.
A. maximum: -22 B. maximum: -18 C. maximum: -15 D. no maximum