Question: 1. Determine whether or not (3,2,5) is a solution to {xy+2z=152x3y+z=173x+5y2z=10. Solve by graphing. 2. {6x8y=4812x23y=1 Solve by substitution. 3. {x8y=103x+2y=17 4. {5xy=152x25y=6 Solve. 5.

1. Determine whether or not (3,2,5) is a solution to {xy+2z=152x3y+z=173x+5y2z=10. Solve by graphing. 2. {6x8y=4812x23y=1 Solve by substitution. 3. {x8y=103x+2y=17 4. {5xy=152x25y=6 Solve. 5. {12x+3y=35x+2y=1 6. {6a3b+2c=112ab4c=154a5b+3c=23 Solve using any method. 7. {x5y+8z=12x+9y4z=83x+11y+12z=15 8. {5x+3y=24x+2y=1 Graph the solution set. 9. {3x+4y<242x3y3y+1>0 Use algebra to solve the following. 10. The length of a rectangle is 1 inch less than twice that of its width. If the perimeter measures 49 inches, then find the dimensions of the rectangle. 11. One solution contains 40% alcohol and another contains 72% alcohol. How much of each should be mixed together to obtain 16 ounces of a 62% alcohol solution? 12. A total of $8,500 was invested in three interest earning accounts. The interest rates were 2%, 3%, and 6%. If the total simple interest for one year was $380 and the amount invested at 6% was equal to the sum of the amounts in the other two accounts, then how much was invested in each account

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