Add or subtract, as indicated. Assume that all variables represent positive real numbers.x
- 2
- 5x
A. -7x
B. -13x
C. -7x
D. -13x
Answer: B
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Describe the largest set S on which it is correct to say that f is continuous.f(x, y, z) = 
A. {(x, y, z): x2 + y2 ? 7} B. {(x, y, z): x2 + y2 ? 49} C. Entire plane D. {(x, y, z): x2 + y2 ? 0}
Solve the problem.A store receives a shipment of 8000 soft drinks. The shipment contains cans of apple and orange juice only. The store makes 20¢ profit on each can of apple juice sold and 35¢ on each can of orange juice. If it makes a profit of $2050.00 on the whole shipment, how many of each item did the shipment contain?
A. 4000 cans of apple juice, 4000 cans of orange juice B. 5000 cans of apple juice, 3000 cans of orange juice C. 5500 cans of apple juice, 2500 cans of orange juice D. 3000 cans of apple juice, 5000 cans of orange juice
Match the system with the appropriate graph.A system with solution (4, 7)
A. 
B. 
C. 
D. 
Make the conversion indicated. Round your result to the nearest tenth.79°C ? 
°F
A. 174.2 B. 75.9 C. 58.8 D. 199.8