Solve the system of linear equations.
x - 
y = -18
x + 
y = -9
A. (12, 0)
B. No solutions
C. (-12, 0)
D. (0, 12)
Answer: C
Mathematics
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Simplify the exponential expression.
A. 
B. 
C. x9
D. 
Mathematics
Write the equation of the quadratic function whose graph is a parabola containing the given points.(0, 3), (3, 15), (-3, 27)
A. y = 3x2 - 2x + 3 B. y = 2x2 - 2x + 3 C. y = 2x2 + 2x +1 D. y = 2x2 - x + 3
Mathematics
Solve the system of equations using substitution. Note that the system may be inconsistent or consistent with dependent equations.
A. (7, -1) B. (8, -2) C. All ordered pairs along 7x - 68 = 6y D. No solution
Mathematics
Find the exact value of y, or state that y is undefined.y = sec-1 (-2)
A. - 
B. 
C. 
D. - 
Mathematics