Solve the problem.The average number of vehicles waiting in line at a toll booth of a super highway is modeled by the function 
, where x is a quantity between 0 and 1 known as the traffic intensity. To the nearest tenth, find the average number of vehicles waiting if the traffic intensity is 0.81.
A. 3.5 vehicles
B. 1.6 vehicles
C. 8.5 vehicles
D. 6.9 vehicles
Answer: D
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Use conversion factors to convert the units of measure.
pounds to ounces
A. 216 oz. B. 54 oz. C. 108 oz. D. 432 oz.
Complete the statement using the required property of multiplication.Associative property: (6 ? 9) ? 7 = _____
A. (7 ? 9) ? 6 B. 9 ? (6 ? 7) C. 6 ? (9 ? 7) D. (9 ? 6) ? 7
Solve the problem.A job pays a salary of 29,000 the first year. During the next 9 years, the salary increases by 6% each year. What is the salary for the 10th year? What is the total salary over the 10-year period? (Round to the nearest cent.)
A. $51,934.58; $333,264.83 B. $48,994.89; $333,248.16 C. $48,994.89; $382,243.05 D. $51,934.58; $434,177.64
Make the indicated conversion between American and metric units of weight and mass using the given property or properties. Round the answer to two decimal places if necessary.A label on a box shows that the box weighs 180 kilograms. How many pounds is that?
A. 457.2 pounds B. 396 pounds C. 81.7 pounds D. 190.8 pounds