The answer is Y=-5/2x-7.
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Answer:

Step by step explanation:
We can solve this situation by using proportions for similar right triangles:

Substitute and solve for x:
Answer:
Your answer would be x+y=531 and y=2x
Step-by-step explanation:
We know that Nancy bought 531 shirts and that some are long sleeved and some are short sleeved. Since x represents the long sleeved shirts and y represents the short sleeved shirts, x+y=531. We also know that there are twice as many short sleeved shirts as long sleeved shirts. So, y=2x.