Evaluate the algebraic expression for the given values of the variables.6x2 + 5x for x = 4
A. 76
B. 44
C. 116
D. 68
Answer: C
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Solve the problem.At a plant that packages bottled spring water, the water is passed through a sequence of ion-exchange filters to reduce the sodium content prior to bottling. Each filter removes 68% of the sodium present in the water passing through it. Determine the number of filters that must be used to reduce the sodium concentration from 16 parts-per-million to 1.58 parts-per-million.
A. 7 filters B. 9 filters C. 6 filters D. 8 filters
Solve the equation.-60 ÷ t = -15
A. -30 B. -4 C. 30 D. 4
Using the graph, determine any relative maxima and relative minima of the function.f(x) = x3 - 3x2 + 1
A. Relative maximum: 1 at x = 0; Relative minimum: -3 at x = 2 B. Relative maximum: none; Relative minimum: -3 at x = 2 C. Relative maximum: -3 at x = 2; Relative minimum: 1 at x = 0 D. Relative maximum: 1 at x = 0; Relative minimum: none
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.log5 10 - log5 2
A. log5 101/2 B. log5 8 C. 1 D. log5 20