Solve the system.y = x2 - 4x + 4x + y = 22
A. {(2, 20)}
B. {(6, 28), (-3, 25)}
C. {(6, 16), (-3, 25)}
D. {(-6, 28), (-3, 19)}
Answer: C
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Plot the set of numbers on a number line.
A. 
B. 
C. 
D. 
Using Thevenin's Theorem, find the equivalent circuit for a low pass filter when R1 = 5.6 Kê, R2 = 6.8 Kê, R3 = 10 Kê, and C = 1200 pF.
a. RTH = 13.1 Kê, C = 1200 pF, output across R
b. RTH = 2.3 Kê, C = 1200 pF, output across C
c. RTH = 11.2 Kê, C = 1200 pF, output across C
d. RTH = 12.4 Kê, C = 848 pF, output across R
e. RTH = 13.2 Kê, C = 1200 pF, output across R
Add the polynomials. Express your answer in standard form.(4x2 + 5x + 20) + (-6x2 - 8x - 9)
A. -2x2 + 3x + 11 B. -2x2 + 11x + 29 C. -2x2 - 3x + 29 D. -2x2 - 3x + 11
Solve the problem.A plane flying with a tailwind flew at a speed of 470 mph, relative to the ground. When flying against the tailwind, it flew at a speed of 330 mph. Express these relationships as equations. Let x represent the speed of the plane in calm air and let y represent the speed of the wind.
A. x + y = 470 y = 330 B. x + y = 330 x - y = 470 C. x + y = 470 x - y = 330 D. x + y = 330 y = 470