Translate the phrase to an algebraic expression.x increased by eight
A. x + 8
B. 8x
C. 8
D. x - 8
Answer: A
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Add or subtract. Express the answer as a mixed number.13
- 7
A. 4
B. 6
C. 5
D. 5
Solve.Suppose the dollar cost to produce n items in a factory is 
Furthermore, the number of items n produced in x hours is 
Find c[n(x)], which is the composite function that defines the dollar cost in terms of the number of hours of production x.
A. c[n(x)] = 18x + 8 B. c[n(x)] = 18x + 48 C. c[n(x)] = 9x + 48 D. c[n(x)] = 9x + 8
For the pair of functions, find the indicated sum, difference, product, or quotient.f(x) = x + 5, g(x) = -4x2 + 17x - 6Find (fg)(4).
A. 702 B. -18 C. 2 D. 70
Modeling Consumer Price Index The consumer price index (CPI) is calculated by averaging the prices of various items after assigning a weight to each item. The following table gives the consumer price indexes for selected years from 1940 through 2002, reflecting buying patterns of all urban consumers, with x representing years past 1900. Find an exponential regression equation for these data. Round coefficients in equation to three decimal places, if necessary.
