Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.log2
A. 
log2m + 
log2n - 
log2k
B. 5 log2m + 9 log2n - 2 log2k
C. 
log2m + 
log2n - 2 log2k
D. 
log2m ? 
log2n ÷ 2 log2k
Answer: C
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Find the missing numbers. Round rates to the nearest tenth of a percent and dollar amounts to the nearest cent.
A. Cost Price: $28.46 Markup: $12.80 B. Cost Price: $18.57 Markup: $22.69 C. Cost Price: $12.80 Markup: $28.46 D. Cost Price: $22.69 Markup: $18.57
Find values of x and y such that both fx(x,y) = 0 and fy(x,y) = 0.f(x,y) = x2 + xy + y2 + 2x + 3y
A. x = 
, y = 
B. x = 
, y = 
C. x = - 
, y = - 
D. x = - 
, y = - 
Use Gaussian elimination to solve the linear system by finding an equivalent system in triangular form.2x + 2y + z = -83x - 3y - z = 74x + y + 3z = -2
A. no solution B. (-1, -4, 2) C. (-1, 2, -4) D. (2, -4, -1)
Find the exact value of the expression.cot 120°
A. 
B. - 
C. -1
D. - 