Factor the trinomial, or state that the trinomial is prime.12a2 - 13ab - 4b2
A. (12a + b)(a - 4b)
B. (4a - b)(3a + 4b)
C. (4a + b)(3a - 4b)
D. prime
Answer: C
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Indicate whether the value of x shown is a solution to the given equation by answering true or false.Value of x: 2
Equation: 2x + 8x - 8 = 12
A. True B. False
Find the midpoint of the line segment whose end points are given.(-8, -8) and (-4, -7)
A. (-4, -1)
B. (-12, -15)
C. (- 2, - 
)
D. (- 6, - 
)
Determine whether f is continuous at c.f(x) = 
;c = -2
A. continuous B. not continuous
Solve the problem.A racetracks curve is banked so that the outside of the curve is slightly elevated or inclined above the inside of the curve. This inclination is called the elevation of the track. The maximum speed on the track in miles per hour is given by
where r is the radius of the track in miles and ? is the elevation in degrees. Find the maximum speed for a racetracks with an elevation of 26° and a radius of 
Round to the nearest mile per hour.
A. 171 mph B. 193 mph C. 59,899 mph D. 37,953 mph