Solve for the missing numbers. Markup is based on cost. Round dollar amounts to the nearest cent.
? % S $ 8.35
A. 
141% S $ 8.35
B. 
169% S $ 8.35
C. 
31% S $ 8.35
D. 
159% S $ 8.35
Answer: B
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Solve the problem.Walt made an extra $10,000 last year from a part-time job. He invested part of the money at 2% and the rest at 3.25%. He made a total of $237.50 in interest. How much was invested at 3.25%?
A. $7000 B. $5000 C. $3000 D. $8000
Find the indicated matrix.Let A = 
and B = 
. Find -2A + 4B.
A. 
B. 
C. 
D. 
Determine whether the graph of the equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y = 
A. origin B. x-axis C. y-axis D. x-axis, y-axis, origin E. none
Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = 6, y = 8, z = 7; (6, 8, 7) B. x = -6, y = 7, z = 12; (-6, 7, 12) C. x = 6, y = 7, z = 8; (6, 7, 8) D. inconsistent