Match each quadratic function given in factored form
with its equivalent standard form listed on the left.

What is the value of x when x + 7 = 21?

Traffic on saturday, it took ms. torres 24 minutes to drive 20 miles from her home to her office. during friday's rush hour, it took 75 minutes to drive the same distance. a. what was ms. torres's average speed in miles per hour on saturday? b. what was her average speed in miles per hour on friday?

Suppose the equation ||x-a|-b|=2008 has 3 distinct real roots and a not =0. find the value of b.