Answer
Option D is correct
The least total cost is from Big Town Electronics.
Step-by-step explanation
We need to find the store that would result in the least total cost for Michelle.
Big Town Electronics
Price = $120
Discount = 10% off
Total Cost = (Price) - (Discount)
= 120 - (10% × 120)
= 120 - (0.10 × 120)
= 120 - 12
Total Cost = $108
Central Phones
Price = $120
Discount = $10 off
Total Cost = (Price) - (Discount)
= 120 - (10)
= 120 - (10)
Total Cost = $110
Main Street Mobile
Price = $160
Discount = 30% off
Total Cost = (Price) - (Discount)
= 160 - (30% × 160)
= 160 - (0.30 × 160)
= 160 - 48
Total Cost = $112
Phone Forum
Price = $125
Discount = $16 off
Total Cost = (Price) - (Discount)
= 125 - (16)
= 125 - 16
Total Cost = $109
Wireles Inc
Price = $110
Discount = No discount
Total Cost = (Price) - (Discount)
= 110 - (0)
= 110 - 0
Total Cost = $110
We can then write the total cost for each of the stores now
Big Town Electronics = $108
Central Phones = $110
Main Street Mobile = $112
Phone Forum = $109
Wireless Inc = $110
We can easily see that the least total cost is from Big Town Electronics.
Hope this Helps!!!