The price of the painting = d dolars.
There is 7% sales tax for the painting.
Total amount of sales tax = 7% of $d.
=[tex] (d)(\frac{7}{100} ) [/tex]
=[tex] (d)(0.07) [/tex] = [tex] (0.07d) [/tex]
So the amount of sales tax = $(0.07d)
Now to find total price Shelby paid we have to add the sales tax with the price of painting.
So total price Shelby paid = $([tex] d+(0.07d) [/tex])
= $([tex] d(1+0.07) [/tex])
=$([tex] d(1.07) [/tex])
= $([tex] 1.07d [/tex])
So we have got all the four options. So the correct option we can choose is the option 5 which is all of the above.