Use analytical methods to solve the equation.
= 
A. -1
B. -3
C. 1
D. 3
Answer: C
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Solve the system by using the inverse of the coefficient matrix.-3x - y - 8z = -36-6x - 7z = -34 5y + z = 9
A. {(1, 1, 4)} B. {(-1, 1, 2)} C. {(1, 4, 1)} D. ?
Solve the problem.A small business owner made $50,000 the first year he owned his store and made an additional 
over the previous year in each subsequent year. Find how much he made during his fourth year of business. Find his total earnings during the first four years. (Round to the nearest cent, if necessary.)
A. $137,200.00; $355,200.00 B. $3.20; $52,083.20 C. $192,080.00; $547,280.00 D. $56,243.20; $212,323.20
Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to three decimal places. log8.15.6
A. 0.748 B. 1.214 C. 0.824 D. 0.691
Solve the problem.The economy of a small country can be regarded as consisting of three industries, I, II, III, whose input-output matrix isIIIIII 
If x, y, and z represent the outputs of industries I, II, and III respectively, write an algebraic expression for the amount of output from industry II that can be exported.
What will be an ideal response?