Determine if the given value is a solution to the equation.3(x - 1) - x = 4x + 6; x = -4
A. Yes
B. No
Answer: B
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Solve the equation.a - 7 = -13
A. a = -6 B. a = -20 C. a = 20 D. a = 6
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?
Solve the problem.Suppose f(x) = 34 + 1.4log (x + 1) models salinity of ocean water to depths of 
at a certain latitude. x is the depth in meters and f(x) is in grams of salt per kilogram of seawater. Approximate the salinity (to the nearest hundredth) when the depth is 946 meters.
A. 38.17 B. 99.80 C. 102.60 D. -29.83
Solve for x.ex2 - 4 = 3
A. ± (2 + 
)
B. 2 ± 
C. ± 
D. none of these