Using substitution yields y = 3. Try solving for x____________________. Graphing Calculator Example: rref (You’re gonna love it.) The system of equations represents the costs of three fruit baskets.
a = cost of a pound of apples 2a + 2b +g + 1.05 = 6.00
b = cost of a pound of bananas 3a + 2b + 2g + 1.05 = 8.48
g = cost of a pound of grapes 4a + 3b + 2g + 1.05 = 10.46 Write the augmented matrix. Enter it into your calculator. Find the cost of a pound of each fruit.
Unless instructed to do a problem only on your calculator, you must show all work for each problem. You may use a calculator to check work. Put answers on lines provided.
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