Graph the system of inequalities.3x - 2y ? -6x - 1 < 0
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.Helen Weller invested $11,000 in an account that pays 12% simple interest. How much additional money must be invested in an account that pays 15% simple interest so that the average return on the two investments amounts to 13%?
A. $11,000 B. $8000 C. $5500 D. $7000
Solve.The intensity of a radio signal from the radio station varies inversely as the square of the distance from the station. Suppose the the intensity is 8000 units at a distance of 2 miles. What will the intensity be at a distance of 10 miles? Round your answer to the nearest unit.
A. 320 units B. 303 units C. 346 units D. 284 units
Find the perimeter or circumference. Use ? ? 3.14 when needed.A circle whose diameter is 4.7 mi long (Round to three decimal places.)
A. 17.341 mi B. 7.379 mi C. 14.758 mi D. 29.516 mi
Solve the problem.At what interest rate must $5600 be compounded annually to equal $13,057.18 after 11 yr? (Round to the nearest percent.)
A. 7% B. 10% C. 9% D. 8%