For the quadratic equation, identify a, b, and c for use in the quadratic formula. Do not solve.x2 + 5x = -4
A. a = 1, b = 5, c = -4
B. a = 1, b = -5, c = -4
C. a = 1, b = 5, c = 4
D. a = 0, b = 5, c = 4
Answer: C
Mathematics
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Solve for the unknown in the equation.A - 7 = 7
A. A = 0 B. A = 14 C. A = -14 D. A = 0
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Factor completely.147x2 + 84x + 12
A. 3(7x - 2)2 B. 3(7x + 2)(7x - 2) C. 3(49x + 4)2 D. 3(7x + 2)2
Mathematics
Solve.A vendor has learned that, by pricing pretzels at $1.50, sales will reach 102 pretzels per day. Raising the price to
will cause the sales to fall to 76 pretzels per day. Let y be the number of pretzels the vendor sells at x dollars each. Write a linear equation that models the number of pretzels sold per day when the price is x dollars each.
A. y = -52x - 180
B. y = 52x + 24
C. y = - 
x + 
D. y = -52x + 180
Mathematics