3x-5x+3 Answer:
Step-by-step explanation:
That'd be y = 70* (1-.00043)^t, where the rate of decrease is really 0.43% and t denotes the # of weeks.
This simplifies to y = 70*(0.00057)^t.
Here is your answer mate
EXPLANATION
Original cost is $10
Total discount 50+20=70
So original cost *70/100
=10*70/100
=$3
Sales tax =$3+(10.1%*$10)
=$3+$1.01
=$4.01
Therefore 4.01 is the final cost of the item
Hope it helps
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