Solve the system by the elimination method or a combination of the elimination and substitution methods.5x2 + 3xy - 5y2 = -9 x2 - xy - y2 = -5
A. {(-1, 2), (1, -2), (2i, i), (-2i, -i)}
B. {(-1, -2), (1, 2), (2i, -i), (-2i, i)}
C. 
D. 
Answer: B
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Find the cubic or quartic function that models the data in the table.
(Cubic)
A. y = -1.53x3 + 0.54x2 - 2.07x + 0.36 B. y = -1.53x3 + 0.24x2 - 2.57x + 0.36 C. y = -1.53x3 + 0.24x2 - 2.07x + 0.36 D. y = -1.83x3 + 0.24x2 - 2.07x + 0.36
Solve.The height in meters of girls of a certain tribe is approximated by 
where t is the girl's age in years and 
Estimate the height (to the nearest hundredth of a meter) of a girl of the tribe 4 years of age.
A. 0.96 m B. 0.77 m C. 1.12 m D. 0.52 m
Find the general form of the equation of the the circle.Center at the point (2, -3); containing the point (5, -3)
A. x2 + y2 - 4x + 6y + 22 = 0 B. x2 + y2 - 4x + 6y + 4 = 0 C. x2 + y2 + 4x - 6y + 22 = 0 D. x2 + y2 + 4x - 6y + 4 = 0
Provide an appropriate response.Under what circumstances can a system of equations be solved more easily by graphing than by substitution?
What will be an ideal response?