Describe what the given ordered pair represents.Let n be the average number of cars sold per week by a car dealer who works t hours per week. What does the ordered pair (38, 15) represent?
A. It will take 15 car deals to sell 38 cars per week
B. A car dealer who works 38 hours per week will sell an average of 15 cars per week.
C. A car dealer who works 15 hours per week will sell an average of 38 cars per week.
D. It will take 38 car deals to sell 15 cars per week
Answer: B
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A. 4 mi B. 2 mi C. 1 mi D. 18 mi
Solve the problem.A woman invested $7,000 at 6% (or 0.06) for 7 years. How much did she have in her account at the end of 7 years? 
A. $9,940 B. $2,940 C. $5,880 D. $294
Show that the function 
is concave upward wherever it is defined.
What will be an ideal response?
Solve the problem. Round to the nearest cent or tenth of a percent.A 66.1% markup based on cost is equivalent to what percent based on selling price (retail)?
A. 78.8% B. 21.2% C. 60.2% D. 39.8%