Part 1: Write a system of equations for this problem and solve it by graphing. (You can write 36,000 and 13,000 as 36 and 13 respectively as long as you remember to put the thousand back on in your answer.) You can use the Graphmatica program to create your graphs, or just draw them on paper and fax or mail them to your instructor. Make sure and indicate the intersection on the graph by writing the ordered pair.
Part 2: Using the same system of equations, solve it by substitution. Be sure to show all work in this process; a final answer is not enough to earn credit. Answer the question in complete sentences.
Part 3: Solve the same system of equations by the addition method. Again, be sure to show all work and indicate your answers in complete sentences.
2006-12-07 04:56:56 · 2 answers · asked by redsoxfan6700 1 in Science & Mathematics ➔ Mathematics