Rewrite as a single logarithm.2 log2(2x + 5) + 6 log2(6x + 1)
A. 12 log2(2x + 5)(6x + 1)
B. log2((2x + 5)2 + (6x + 1)6)
C. log2(2x + 5)2(6x + 1)6
D. log2
Answer: C
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Solve the problem.Using a phone card to make a long distance call costs a flat fee of $0.39 plus $0.32 per minute starting with the first minute. Find a linear function f(x) = mx + b whose input is the number of minutes for a call and whose output is the corresponding cost for the call.
A. f(x) = 0.39x B. f(x) = 0.32x C. f(x) = 0.39x + 0.32 D. f(x) = 0.32x + 0.39
Sketch the surface z = f(x,y).f(x, y) = 3 - x2
A. 
B. 
C. 
D. 
Refer to the equilateral triangle shown below and its six symmetries: ? r1 : reflection with axis l1 ? r2 : reflection with axis l2 ? r3 : reflection with axis l3 ? R1 : 120° clockwise rotation with rotocenter O ? R2 : 240° clockwise rotation with rotocenter O ? I : the identity symmetry
Which symmetry results when applying the symmetry R2 followed by r1 ?
A. R1 B. r1 C. R2 D. r2 E. r3
Factor completely. If a polynomial cannot be factored, say it is prime.12a2 - 5ab - 3b2
A. (3a - b)(4a + 3b) B. prime C. (12a + b)(a - 3b) D. (3a + b)(4a - 3b)