Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = -5, y = -4; (-5, -4)
B. inconsistent
C. x = -5, y = 4; (-5, 4)
D. x = 4, y = -5; (4, -5)
Answer: C
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Solve the problems.Jack is currently driving into a headwind (17% decrease). If his normal mileage is 28 mpg, what will his car's mileage be in the headwind? Round your answer to the nearest tenth.
A. 45 mpg B. 7.3 mpg C. 28 mpg D. 23.2 mpg
Solve the problem. Use a FICA rate of 6.2%, a Medicare rate of 1.45%, and an SDI rate of 1%. Assume the person's earnings will not exceed $31,800 for the year. Round to the nearest cent if needed.Bill Fox is paid 7% commission on sales. During a recent week, he had sales of 
and allowances of 
Find his Social Security tax, Medicare tax, and SDI deduction for the week.
A. $50.74, $11.87, $8.18 B. $42.46, $9.93, $6.85 C. $42.89, $10.03, $6.92 D. $58.59, $8.18, $9.45
Estimate the result of the calculation. Use your estimate to determine if the result appears to be correct or incorrect.
A. Incorrect. Estimate: 2800 B. Correct. Estimate: 2600 C. Incorrect. Estimate: 2500 D. Incorrect. Estimate: 2700
Determine whether the statement is true or false.-21 > -1
A. False B. True