An electronics store is having a going-out-of-business sale. They have 220 computers in their inventory, and they believe they can sell 3 computers every day. If y represents the total number of computers in their inventory and x represents the number of days, which function rule describes this situation?

A. y=3x-220

B. y=220-3x

C. y=3 (x-l) - 220

D. y=220-3 (x-1)

Question

15 March, 06:46

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Answers (1)

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Donna Chavez · Answer 1

We know:

-->y (0) = 220

-->dy/dx = - 3

So int (dy=-3dx) = y=-3x+C

at y (0) - - > 220=-3 (0) + C

Therefore C = 220

Thus y=220-3x []