Solve the system of equations graphically.x - y = 6x + y = 12
A. (18, 6)
B. (9, 3)
C. (6, 18)
D. (3, 9)
Answer: B
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Solve the problem.Given the velocity and initial position of a body moving along a coordinate line at time t, find the body's position at time t.v = cos 
t, s(0) = 1
A. s = 
sin 
t + ?
B. s = 2? sin 
t
C. s = sin t
D. s = 
sin 
t
Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)1.8x + 1.3y - 4.6z = 3.24.1x - 6.4y + 1.5z = -3.62.0x + 4.0y + 4.7z = 8.2
A. {(1.1, 1.3, 0.1)} B. {(4.6, 5.3, 0.5)} C. {(2.3, 2.7, 0.3)} D. {(0.6, 0.7, 0.1)}
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
A. 9 
B. 3 
C. 3 
D. 3a 
Describe and graph the interval of real numbers.(-?, 5]
What will be an ideal response?