We have been given that you went to Walmart and spend $75. Of the total bill, $45.50 included non-taxable items.
Let us find the amount of taxable items by subtracting amount of non-taxable items from total bill.


We have been given that the rate of tax is 7.5% to the taxable items. To find the amount of tax, we will find 7.5% of $29.50.


Final amount of bill would be amount of bill plus amount of tax.


Therefore, final amount of bill would be
.
"of" means multiply, "was/is" means equals
started driving price was 1/4 of current price
? = 1/4 x 3.16
? = 3.16/4
? = .89
Answer: $0.89
Im not sure about 6 but i think 4 is idk