Ashopper paid $51.93 including tax for an item marked $48.99. what would she pay for another item marked $75? find the tax rate oac/oa, round to the nearest whole percent, then use it to find the tax on $75.

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample