Solve the system.
A. (-8, -5)
B. (8, 5)
C. (-8, 5)
D. (8, -5)
Answer: B
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Find the vertex, focus, and directrix of the parabola with the given equation.(x - 4)2 = -8(y - 3)
A. vertex: (-4, -3) focus: (-4, -5) directrix: y = -1 B. vertex: (4, 3) focus: (4, 1) directrix: y = 5 C. vertex: (4, 3) focus: (4, 5) directrix: x = 1 D. vertex: (3, 4) focus: (3, 2) directrix: y = 6
Solve the problem.Let f(x) compute the time in hours to travel x miles at 
per hour. What does 
compute?
A. The miles traveled in x hours B. The miles traveled in 46 hours C. The hours taken to travel x miles D. The hours taken to travel 46 miles
Evaluate.
for a = -3 and b = -2
A. - 
B. 
C. - 
D. 
Solve the problem.P(x) = -x3 + 12x2 - 36x + 400, x ? 3 is an approximation to the total profit (in thousands of dollars) from the sale of x hundred thousand tires. Find the number of hundred thousands of tires that must be sold to maximize profit.
A. 3 hundred thousand B. 7 hundred thousand C. 6 hundred thousand D. 2 hundred thousand