The Table Contains Algebraic Expressions for the Rate an Object

question 252

Essay

The table contains algebraic expressions for the rate an object travels, and the time traveled at that rate in terms of a constant. Complete the table by finding a .
$\begin{array}{|l|l|l|}\hline \text {Rate (mph)} & \text {Time (hr) } &\text {Distance (mi) } \\\hline \frac{k^{2}+3 k-4}{k-4} & \frac{k^{2}-16}{k^{2}-1} & a \\\hline \end{array}$

a = __________

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