Harper recorded the grade level and instrument of everyone in the middle school School of Rock below. What percent of the students in the School of Rock play drums? Round your answer to the nearest whole number percent.

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?

Three times the sum of a number and seven is negative thirty-six. what is the number?

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics