Answer:
13.50
Step-by-step explanation:
15.75 - 2.25= 13.50
Check: 13.50 + 2.25 = 15.75
20
To find out how many pennies were in each stack, you would have to divide 500 by 25. This gives you 20.
The y-value changes sign when a point is reflected across the x-axis. The reflected point is (-3, -7).
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