Question

A grocery store announced a promotion: if you buy 3 units of stock product (each for Sv), then each next unit will cost you Su less. What is the cost, in dollars, for buying w units of stock product, where w is greater than 3?

Answer 1

If you buy 3 units of stock product for Sv dollars each, the next unit will cost you (Sv-Su) dollars. If you buy w units of stock product, where w is greater than 3,

Sv*3 + (Sv-Su)*(w-3) dollars.

Answer 2

The cost of buying w units of stock product, where w is greater than 3, would be 3Sv + (w - 3) * (Sv - Su) dollars.

Step-by-step explanation:

Sure, let's show the math step by step.

Given:

Cost of the first 3 units (Sv each): 3Sv

Cost of each additional unit beyond the first 3: (Sv - Su)

Total units to buy: w (where w > 3)

To find the total cost (TC) for buying w units, we can use the formula:

TC = Cost of first 3 units + Cost of additional units

Cost of first 3 units: 3Sv

Cost of additional units:

Number of additional units beyond the first 3: w - 3

Cost of each additional unit: (Sv - Su)

Total cost of additional units: (w - 3) * (Sv - Su)

Putting it all together:

Total Cost (TC) = 3Sv + (w - 3) * (Sv - Su)