An Arch Has the Shape of the Parabola a Rectangle

question 130

Multiple Choice

An arch has the shape of the parabola A rectangle is fit under the arch by selecting a point on the parabola (see the figure) . If the rectangle has base and height . Find the base of a second rectangle that has the same area.

• A)10.85
• B)9.85
• C)8.85
• D)8.62
• E)10.8

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Definitions:

Real Interest Rate

Adjusted interest rate for inflation, reflecting the true cost of borrowing or the real yield on savings.

Nominal Interest Rate

The interest rate before adjustments for inflation, representing the raw interest percentage that lenders charge borrowers for the use of money.

Inflation Rate

The speed at which the aggregate price level for goods and services goes up, undermining the power of purchasing.

Nominal Interest Rate

The rate of interest before adjustments for inflation; the stated rate on a loan or investment.