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The outside temperature is 25 degrees and is falling 5 degrees per hour. What is y, the outside temperature after x hours? |
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Sandy has $25 and spends $3 each week. What is y, the total amount saved after x weeks? |
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x | y |
-1 | 30 |
0 | 25 |
1 | 20 |
2 | 15 |
x | y |
-1 | 28 |
0 | 25 |
1 | 22 |
2 | 19 |
y = 25 – 5x
y = 25 – 3x