I believe the answer is 120. 3 5/6 turns into 3.833 when turned into a decimal. 3.833 would round up to 4 which is the nearest whole number. 34 3/7 would turn into 34.4285 as a decimal which turns into 30 when rounded to the nearest ten.
To find sales tax on something, multiply the percent of the tax by the price of the item.
I think the answer is {-4,1,5,8}
