Use a graphing utility to solve the system of linear equations and give the solution of the system.
A. 
x = 
, y = - 
, z = 9
B. 
x = 
, y = - 
, z = 9
C. 
x = 1, y = 5, z = 9
D. 
x = 9, y = 5, z = 1
Answer: C
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Provide an appropriate response.Starting with a tone having a frequency of 687 cycles per second, find the frequency of the tone that is two octaves higher.
A. 471,969 cps B. 1374 cps C. 2748 cps D. 5496 cps
Find a rectangular equation for the plane curve defined by the parametric equations.x = t2 + 1, y = t2 - 1
A. y = x2 + 2, x ? 1 B. y = x + 2, x ? 1 C. y = x - 2, x ? 1 D. y = x2 - 2, x ? 1
Find the equation of the line passing through the indicated two points. Write the equation in point-slope form.(-2, 1) and (3, 7)
A. y - 1 = 
(x + 2) or y - 7 = 
(x - 3)
B. y + 1 = 
(x - 2) or y + 7 = 
(x + 3)
C. y - 1 = 
(x + 2) or y - 7 = 
(x - 3)
D. y - 1 = - 
(x + 2) or y - 7 = - 
(x - 3)
Evaluate the function.Find f(7.9) when f(x) = -4x + 0.10.
A. -31.5 B. 31.7 C. -31.7 D. -30.6