Solve the equation.5x + 3 = 6 - 2x
A. 1
B. 3
C. 
D. 
Answer: C
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Find the magnitude and direction angle (to the nearest tenth) for each vector. Give the measure of the direction angle as an angle in [0,360°].
A. 15; 157.4° B. 13; 112.6° C. 13; 157.4° D. 13; 22.6°
A patient's forearm is x-rayed for a time of 0.4s at a distance of 20in (FFD). If a new x-ray is ordered with a time exposure of 0.3s, what should the new FFD be if the current level is unchanged?
A. 17in B. 300in C. 32in D. 27in
Factor completely using the trial and error method to factor trinomials. If unfactorable, indicate that the polynomial is prime.6x2 - 21x - 12
A. 3(2x - 1)(x + 4) B. (6x - 3)(x + 4) C. 3(2x + 1)(x - 4) D. prime
Find the vertex, the focus, and the directrix of the parabola.y = -2x2 - 8x - 12 = 0
A. V: 
; F: (-2, -6); D: x = -2
B. V: (-2, -4); F: 
; D: y = - 
C. V: 
; F: (-2, -12); D: x = -4
D. V: 
; F: 
; D: x = - 