Translate the percent problem to a basic percent equation using x for the unknown value. Do not solve.What percent of 65 is 37?
A. x ? 65 = 0.37
B. x ? 0.65 = 37
C. x ? 65 = 37
D. 37 ? x = 65
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
If the radius of a sphere is multiplied by 3, what effect does that have on the area? ?
A. 27 - fold increase B. 1.5 - fold decrease C. 9 - fold increase D. 3 - fold increase E. doesn't change
Solve and graph.-30 < 9x + 6 and 9x + 10 < 10
A. [-4, 0)
B. [-4, 0]
C. (-4, 0]
D. (-4, 0)
Identify the number as real, complex, pure imaginary, or nonreal complex. More than one of these descriptions may apply.-1
A. Nonreal complex B. Complex C. Complex, pure imaginary, nonreal complex D. Real, complex