Acookbook has dimensions 12 cm by 16cm
what scale factor should be used to make an enlarged version that has dimensions 21 cm by 28 cm?
a)0.75
b)1.3
c)1.5
d)1.75

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