Chapter 1: Problem 71
71-86. Simplify. $$ \left(x^{3} \cdot x^{2}\right)^{2} $$
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Chapter 1: Problem 71
71-86. Simplify. $$ \left(x^{3} \cdot x^{2}\right)^{2} $$
These are the key concepts you need to understand to accurately answer the question.
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If \(f(x)=x+a,\) then \(f(f(x))=?\)
For any \(x\), the function \(\operatorname{INT}(x)\) is defined as the greatest integer less than or equal to \(x\). For example, \(\operatorname{INT}(3.7)=3\) and \(\operatorname{INT}(-4.2)=-5\) a. Use a graphing calculator to graph the function \(y_{1}=\operatorname{INT}(x) .\) (You may need to graph it in DOT mode to eliminate false connecting lines.) b. From your graph, what are the domain and range of this function?
85-86.The intersection of an isocost line \(w L+r K=C\) and an isoquant curve \(K=a L^{b}\) (see pages 18 and 31 ) gives the amounts of labor \(L\) and capital \(K\) for fixed production and cost. Find the intersection point \((L, K)\) of each isocost and isoquant. [Hint: After substituting the second expression into the first, multiply through by \(L\) and factor.] $$ 3 L+8 K=48 \text { and } K=24 \cdot L^{-1} $$
Explain why, if a quadratic function has two \(x\) -intercepts, the \(x\) -coordinate of the vertex will be halfway between them.
If a linear function is such that \(f(4)=7\) and \(f(6)=11,\) then \(f(5)=?\) [Hint: No work necessary.]
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