Simplify.
? -12 ÷ (-4)
A. 42
B. -42
C. -672
D. 672
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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Find the indicated matrix.Let A = 
and B = 
. Find 2A + B.
A. 
B. 
C. 
D. 
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Solve the problem.The formula y = 
models the average cost per unit, y, for Electrostuff to manufacture x units of Electrogadget IV. How many units must the company produce to have an average cost per unit of $410?
A. 147 units B. 127 units C. 149 units D. 116 units
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Solve the equation by making an appropriate substitution.x2/5 - x1/5 - 6 = 0
A. {-243, 32} B. {-3, 2} C. {3, -2} D. {243, -32}
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