The following exercises present you with fairly straightforward ratio and proportion situations.   A. If the Dow Jones Industrial Average in the stock market began the day at 12,000 and lost 700 points, how much would a proportional fall be if the stock market began the day at 1,000? Estimate the answer and explain how you obtained the estimate.   Determine the actual answer. (Round your answer to the nearest whole number.)   Explain whether the actual answer is, itself, actually exact or an approximation.   (b) If the stock market was at 2,700 and rose 45 points, how much would a proportional rise be if the stock market began the day at 10,000? Estimate the answer and explain how you obtained the estimate.   Determine the actual answer. (Round your answer to the nearest whole number.)     Explain whether the actual answer is, itself, actually exact or an approximation.

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Q: How do you turn a decimal into a percentage?

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Q: Imagine having $82,000 in a retirement account that during the previous 5 years had increased by…

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Q: An investment of 6,000 grows at a rate of 4% for one year, then at a rate of 9% for three years.…

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.