Solve the equation by completing the square.x2 + 2x + 3 = 0
A. -1 ± 2i
B. -1 ± i
C. 1 ± 2i
D. 1 ± i
Answer: B
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Divide. Express your answer in simplest form.5
÷ 3
A. 1
B. 1
C. 2
D. 1
Solve the problem.Find the exponential function that models the data in the table below. Round the coefficients to the nearest hundredth.
A. f(x) = 
+ 4.45
B. f(x) = 3.33(1.20)x
C. f(x) = 3.11(1.26)x
D. f(x) = 
Solve the problem.An experimental model for a suspension bridge is built. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 12.25 inches tall and stand 70 inches apart. Find the vertical distance from the roadway to the cable at a point on the road 17.5 inches from the lowest point of the cable.
A. 3.26 in. B. 2.86 in. C. 12.25 in. D. 3.06 in.
Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
?
A. x = 1, y = -3, z = 0, w = 3; (1, -3, 0, 3) B. x = 1, y = 3, z = 0, w = -3; (1, 3, 0, -3) C. x = -1, y = 3, z = 0, w = -3; (-1, 3, 0, -3) D. x = -1, y = -3, z = 0, w = 3; (-1, -3, 0, 3)