Solve using Cramer's rule.
A. (3, -5)
B. (5, -3)
C. (-5, -3)
D. (-3, 5)
Answer: D
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Provide an appropriate response.Explain why someone would want to solve 
for b.
What will be an ideal response?
For the given functions f and g, find the requested function.f(x) = 2x + 2; g(x) = 6x - 9
Find (f ? g)(x).
A. (f ? g)(x) = 12x2 - 6x - 18 B. (f ? g)(x) = 8x2 - 6x - 7 C. (f ? g)(x) = 12x2 - 18 D. (f ? g)(x) = 12x2 + 3x - 18
Solve the problem.From a point on a river, two boats are driven in opposite directions, one at 8 miles per hour and the other at 10 miles per hour. In how many hours will they be 72 miles apart?
A. 6 hr B. 5 hr C. 1 hr D. 4 hr
Write the standard form of the equation of the circle with the given center and radius.(0, 0); 5
A. x2 - y2 = 5 B. x2 + y2 = 5 C. x2 + y2 = 10 D. x2 + y2 = 25