1. which is the better buy?

a. 6 for #3.49
b. 7 for #3.55
c. 8 for #3.99
d. 9 for #4.20

i got letter D

2. the price of a leather jacket is #375.25. if the sales tax rate is .25%, what is the final price of the jacket(including tax)?
____________________

1. Correct.

2. Are you sure your sales tax rate is correct? At 0.25%, the tax would be less than a dollar.

yes

$375.25 * 1.0025 = $376.19

Note that most sales taxes are around 5 to 7%.

is it including tax

Yes.

I told you that the sales tax using 0.25% was less than a dollar.

To determine which option is the better buy in question 1, we need to calculate the price per item for each option. Let's calculate it for each option:

a. Price per item = #3.49 / 6 = #0.5825
b. Price per item = #3.55 / 7 = #0.5071
c. Price per item = #3.99 / 8 = #0.4988
d. Price per item = #4.20 / 9 = #0.4667

By comparing the price per item, we can see that option d (9 for #4.20) has the lowest price per item, making it the better buy.

For question 2, to calculate the final price of the leather jacket including tax, we need to add the sales tax amount to the original price. First, we need to calculate the sales tax amount:

Sales tax amount = 0.25% of #375.25

To calculate 0.25% of a number, we need to multiply the number by 0.25 / 100:

Sales tax amount = #375.25 * (0.25 / 100) = #375.25 * 0.0025 = #0.9381

Now, we can calculate the final price by adding the sales tax amount to the original price:

Final price = #375.25 + #0.9381 = #376.1881 (rounded to the nearest cent)

Therefore, the final price of the leather jacket, including tax, is approximately #376.19.