Solve the system by elimination. If the system is inconsistent or has dependent equations, say so.8x + 4y = 84x - 2y = 14
A. ?
B. 
C. 
D. 
Answer: C
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Provide an appropriate response.Find the direction in which the function is increasing most rapidly at the point P0.f(x, y) = xey - ln(x), P0(-1, 0)
A. 
i - 
j
B. 
i + 
j
C. 
i - 
j
D. 
i
Does the system have one solution, no solution, or an infinite number of solutions? x - 2y = 52x - 4y = 18
A. One B. No Solution C. Infinite number
Tell whether a linear model or a quadratic model is appropriate for the data. If linear, tell whether the slope should be positive or negative. If quadratic, decide whether the leading coefficient a of x2 should be positive or negative.
A. linear; positive B. quadratic; negative C. quadratic; positive D. linear; negative
Find the exact value by using a half-angle identity.tan 165°
A. 2 - 
B. -2 + 
C. -2 - 
D. 2 + 