Which situation can be represented by a single expression?
a. the product of 3/4, and a number is 16.
b. 1/5 of a number
c. half of a number is 15.
d. the difference of 20 and a number is 14.

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list