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1. Evaluate f(13, 18) if
(The function f computes the distance that the point (x, y) is from the point (1, 2).) 2. Solve the system of nonlinear equations using the method of substitution.
3. Solve the system of inequalities graphically. Use the graph to identify one solution.
4. In 1996 the United States and the former Soviet Union had a combined total of 13,820 strategic nuclear warheads. The United States had 480 more warheads than the former Soviet Union. (Sources: Arms Control Association, Natural Resources Defense Council.) Find a system of linear equations whose solution gives the number of nuclear warheads for each country. Solve the system.
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