Answer:
(0;2)
Step-by-step explanation:
substitute the value of y in the equation, then solve in x
x+2=-1/2x+2
x=0
substitute the value of x in the equation.
y=2
The price of the watch is 280$
We know that the original price is 400 dollers, and its on sale for 30%.
So we do 30% of 400 = 120$
finally we do, 400$ - 120$ = 280$
so the final price of the watch is 280$
hope this helps
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