Solve the equation by completing the square.x2 + 4x - 3 = 0
A. {-2 - 2
, -2 + 2
}
B. {2 + 
}
C. {-1 - 
, -1 + 
}
D. {-2 - 
, -2 + 
}
Answer: D
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Solve the problem.Find the mass of a thin infinite region in the first quadrant bounded by the coordinate axes and the curve 
if 
.
A. 
B. 
C. 
D. 
Find all real numbers that satisfy the equation.tan 3? = -1
A. 
B. 
C. 
D. 
Determine the real solutions to the system of nonlinear equations.x2 - y2 = 27x2 + y2 = 51
A. (
, 2
), (-
, 2
)
B. (
, 2
), (-
, 2
), (
, -2
), (-
, -2
)
C. (0, 0)
D. (
, 2
), (-
, -2
)
Solve the problem. A foreign exchange student decided to purchase an international calling plan. The monthly cost of the plan is $19.99 plus $0.08 per minute. This can be modeled by the equation 
where C is the monthly cost and m is the number of minutes used each month. Graph this equation, assuming the student will not use more than 400 minutes in a month.Monthly Cost of Cell Phone Use
A.
| Monthly Cost of Cell Phone Use |
B.
| Monthly Cost of Cell Phone Use |
C.
| Monthly Cost of Cell Phone Use |
D.
| Monthly Cost of Cell Phone Use |
