A department store buys 100 shirts at a cost of $2000 and sells them at a selling price of $25 each. Find the percent markup.

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.

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