Simplify the expression 2c+2+5c​

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

Astudent survey asked: "how tall are you (in inches)? " here's the data: 67, 72, 73, 60, 65, 86, 72, 69, 74 give the five number summary. a. median: 73, mean: 70.89, iqr: 5, min: 60, max: 74 b. 60, 66, 72, 73.5, 86 c. 60, 67, 72, 73, 74 d. 0, 60, 70, 89, 74, 100

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x