The cost of 16 oranges is $1. what is the cost of 4 dozen oranges?

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

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