Let's solve this step-by-step, considering all the components of Kito's purchase.
### Step 1: Calculate the total purchase price
Kito buys three items:
- Guitar case: [tex]$39.99
- Tuner: $[/tex]24.99
- Picks: [tex]$26.99
We need to find the sum of these prices:
\[
39.99 + 24.99 + 26.99 = 91.97
\]
### Step 2: Calculate the amount of tax
Taxes are $[/tex]6\%[tex]$ of the total purchase price. So we need to calculate $[/tex]6\%[tex]$ of $[/tex]91.97:
[tex]\[
0.06 \times 91.97 = 5.5182
\][/tex]
Rounding to the nearest cent, this becomes:
[tex]\[
5.52
\][/tex]
### Step 3: Calculate the total after including tax
We add the tax to the total purchase price:
[tex]\[
91.97 + 5.52 = 97.49
\][/tex]
### Step 4: Determine the shipping cost
Kito selects express shipping. According to the provided table, for purchases between [tex]$50 and $[/tex]100, express shipping costs [tex]$8.20.
Hence, the shipping cost is:
\[
8.20
\]
### Step 5: Calculate the total billed amount
We add the shipping cost to the total after tax:
\[
97.49 + 8.20 = 105.69
\]
The total billed to Kito's credit card is indeed $[/tex]105.69, which is calculated to be correct. Therefore, Kito has been billed correctly.
### Conclusion
The best answer is:
[tex]\[
\text{a. Kito has been billed correctly.}
\][/tex]
