Which of the following functions are quadratic functions? (Select all that apply.)

A. f (x) = 2x - 4

B. f (x) = 3 - x2

C. f (x) = 3x2 - x - 6

D. f (x) = 3 x2

The average mark of candidates in an aptitude test was 128.5 with a standard deviation of 8.2. Three scores extracted from the test are 148, 102, 15zs2. What is the average of the extracted scores that are extreme values (outliers)

Two-fifths as a decimal, percent and fractoin

Solve for v Simply as much as possible 9v=16+v

Your computer supply store sells two types of inkjet printers. The first, type A, costs $267 and you make a $24 profit on each one. The second, type B, costs $127 and you make a $20 profit on each one.

How do you do 185 times 12 in standard algorithm?

Find the length of xpy leave your answer in terms of pi the radius is 6m and the circle is cut in fourths

Sammy bought a new car. The depreciation equation is given by f (x) = 30,000 (.85) x, where x represents the number of years since the purchase of the car, and f (x) represents the value of the car.

A cross-country skier covered 1/3 of her race in one hour, 2/5 of the race during the next hour, and the remainder of her race in the third hour. What fraction of the race did the skier cover during her third hour?

Explain why the diagram shows that 6 (3 + 4) = 6.3 + 6.4.

A swimming pool has an area of 40 square meters. It's length is 8 meters. What is the width?