Find the sum. Simplify when necessary.3 + (-14) + (- 10)
A. 7
B. -1
C. 27
D. -21
Answer: D
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Solve the problem.The polynomial -0.4t2+ 11t describes the average number of digits that participants in a memorization experiment were able to recall after t minutes. Find the number of digits recalled after 7 minutes. Round to the nearest digit.
A. 77 digits B. 57 digits C. 37 digits D. 97 digits
Solve the proportion.
= 
A. w = 3
B. w = 4
C. w = 
D. w = 12
Use Euler's method to approximate the indicated function value to three decimal places using 
= 2xy; y(1) = 1; find y(1.4)
A. 2.982 B. 2.287 C. 2.591 D. 2.928
The following graph shows the actual percentage of U.S. households with a computer as a function of household income (the data points) and a logistic model of these data (the curve). The logistic model is
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where x is the household income in thousands of dollars. For low incomes, the logistic model is approximately exponential. Which exponential model best approximates P(x) for small x? Round the coefficients to the nearest hundredth.
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?P(x) = ________ ·( ________)x
What will be an ideal response?