Multiply and simplify. Write the answer as a mixed number if possible.7 ? 3

A. 10
B. 23
C. 21
D. 63


Answer: B

Mathematics

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Determine if the item described is designed in accordance with the golden ratio.An archway has a height of 7.0 meters and a width of 4.3 meters.

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Solve the problem.Let f(x) = cos x, g(x) = x - ?/2, and h(x) = 4x. Find f(h(g(x))).

A. 4 cos(x - ?/2) B. cos(4x - ?/2) C. cos(4[x - ?/2]) D. 4 cos(4[x - ?/2])

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A. 7x + 6 + 14h B. 14x + 12 C. 14xh + 12h + 12h2 D. 14x + 12 + 7h

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The following sentence involves decimals. Write the decimal in words.One gallon is equal to 3.7853 liters.

A. Three and seven thousand eight hundred fifty-three ten-thousandths B. Thirty-seven thousand and eight hundred fifty-three ten-thousandths C. Thirty-seven thousand and eight hundred fifty-three hundredths D. Three and seven thousand eight hundred fifty-three thousandths

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