Express the number in scientific notation.0.000399
A. 3.99 x 10-5
B. 3.99 x 104
C. 3.99 x 10-4
D. 3.99 x 10-3
Answer: C
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Solve.Find the area under the curve 
from 
to x = 
.
A. 44 B. 22 C. -44 D. -22
Write the decimal in word form.917.081
A. nine hundred and seventeen and eighty-one thousandths B. nine hundred seventeen and eighty-one ten-thousandths C. nine hundred and seventeen and eighty-one hundredths D. nine hundred seventeen and eighty-one thousandths
Health insurance administrative costs are a concern for many companies that supply the insurance for their employees. The information below is information gathered recently. Let x be the average number of employees in a group health insurance plan and y be the average administrative cost as a percentage of claims. Find the sample correlation coefficient. Round your answer to three decimal places.
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a. –0.83
b. –0.883
c. 0.78
d. 0.883
e. –0.78
Solve the problem.The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. If a 28-kg object stretches a spring 89 cm, how far will a 10-kg weight stretch the spring?
A. 31.79 cm B. 3.1461 cm C. 127 cm D. 3.17857143 cm