Chapter 7: Problem 13
Simplify each expression. $$7 x+4(x-6)$$
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Chapter 7: Problem 13
Simplify each expression. $$7 x+4(x-6)$$
These are the key concepts you need to understand to accurately answer the question.
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If possible, find a solution to the system $$\left\\{\begin{array}{l}x+y=5 \\\x-y=-3 \\\2 x-y=-2\end{array}\right.$$
Graph each system of inequalities and give two possible solutions to each problem. SEE EXAMPLE 9 (OBJECTIVE 5) Dry Boatworks wholesales aluminum boats for \(800\)dollar and fiberglass boats for \(600\)dollar. Northland Marina wants to order at least \(2,400\)dollar but no more than \(4,800\)dollar worth of boats. Find a system of inequalities whose graph will show the possible combinations of aluminum boats, \(x\), and fiberglass boats, \(y\), that can be ordered, and graph it in the illustration.
Use two equations in two variables to solve each application. An investment of \(\$ 950\) at one rate of interest and \(\$ 1,200\) at a higher rate together generate an annual income of \(888.50 .\) If the investment rates differ by \(2 \% .\) find the lower rate.
Graph the solution set of each system of inequalities, when possible. SEE EXAMPLE 7. (OBJECTIVE 4) $$\left\\{\begin{array}{l} x<-2 \\ y \geq 3 \end{array}\right.$$
Explain how to find the boundary for the graph of an inequality.
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