Which of the following is the quadratic formula? Oy= 22
Oy= a(x - h)+ k
O r = -BEV62-4ac
2a
O V62 - 4ac

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Evaluate the function , when d = {9, 15, 30}. r = {5, 7, 12} r = {6, 10, 15} r = {6, 10, 20} r = {5, 12, 20}