Compute the exact interest (365-day year) and the total amount of the loan for the following problems. Round answers to the nearest cent.​
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Future Shop purchases computers for $787 less 31% and 6%. The normal retail price is 37% markup on cost. Determine the normal retail price

Use the properties of logarithms to condense ${\log }_{12}(x+4)-4{\log }_{12}x$ .

A) ${\log }_{12}\left(x+4-x^4\right)$
B) ${\log }_{12}{\left(\frac{x+4}{x}\right)}^4$
C) ${\log }_{12}(-3x+4)$
D) ${\log }_{12}\frac{x+4}{4x}$
E) ${\log }_{12}\frac{x+4}{x^4}$

Compute the future value and the compound interest earned for each of the following investments. Use Tables 16-1A&B or a calculator.