Express as a sum of logarithms.log2 xy
A. log2 x + log2 y
B. log1 x + log1 y
C. log2 x - log2 y
D. log1 x - log1 y
Answer: A
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Solve using the elimination method. If the system has an infinite number of solutions, use set-builder notation to write the solution set. If the system has no solution, state this. x + 2y = 10 7x + 2y = 22
A. (2, 4) B. No solution C. (3, 3) D. (-4, 2)
The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r(1 - 2 cos ?) = 1
A. 
= 2 + x
B. 
= 1 + 2x
C. x2 + y2 = 2 + x
D. x2 + y2 = 1 + 2x
The graph of the given function is drawn with a solid line. The graph of a function, g(x), transformed from this one is drawn with a dashed line. Find a formula for g(x).f(x) = x2
A. g(x) = (x - 5)2 B. g(x) = 5x2 C. g(x) = x2 + 5 D. g(x) = x2 - 5
Determine whether the points A, B, and C form a right triangle.A = (5, -3); B = (7, 1); C = (9, 0)
A. Yes B. No