Here are the scores that Jenna has received on her seven quizzes: 16, 13, 20, 16, 12, 17, 18

What is the standard deviation rounded to the nearest tenth?

ITS NOT 2.8 OR 6.6 PLEASE HELP! ​

Ineed asap.i cant understand this question i need someone to me right away

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

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