To solve the problems presented, let's break down each part.
2a.
The expression in terms of \( d \) for the total cost when Winonna and Takoda buy the set of power tools with a discount will be as follows:
- If \( d \) represents the original price and there's a 15% discount, the correct expression for the price they would pay is:
\[ d - (d \times 0.15) \]
This option represents the original price \( d \) minus 15% of \( d \).
2b.
Given that the original price of the power tools is $50.00 (i.e., \( d = 50 \)), we need to compute the sales prices for each present after applying the respective discount percentages.
Let's assume the discount percentages for the other items are as follows (as they were not given in the question, I will use hypothetical percentages; you would replace these with the actual ones):
- Power Tools: 15%
- Water Skis: 10%
- Jewelry: 20%
Now, let's calculate the sales prices for each present:
-
Power Tools: \[ \text{Sales Price} = d - (d \times 0.15) = 50 - (50 \times 0.15) = 50 - 7.5 = 42.5 \]
-
Water Skis (assuming a 10% discount): \[ \text{Original Price} = x \quad \text{(Assume this is given)} \] \[ \text{Sales Price} = x - (x \times 0.10) = x - 0.1x = 0.9x \]
(You will need the actual price for the Water Skis to calculate this)
-
Jewelry (assuming a 20% discount): \[ \text{Original Price} = y \quad \text{(Assume this is given)} \] \[ \text{Sales Price} = y - (y \times 0.20) = y - 0.2y = 0.8y \]
(Again, you will need the actual price for the Jewelry to calculate this)
With the actual prices of the Water Skis and Jewelry, replace \( x \) and \( y \) and plug in to calculate their sales prices.
To summarize:
- The expression for 2a is \( d - (d \times 0.15) \).
- For 2b, calculate each item's sales price based on the original price and its respective discount.
Let me know if you can provide the percentages or prices for the Water Skis and Jewelry, and I can assist further!