You can select a noncontiguous range of cells by pressing and holding the ________ key when using it in combination with other navigation keys and/or the mouse

Your co-worker Patrick has a Core i5 3.1 GHz CPU. Pat wants you to tell him what the bus speed is and what the maximum multiplier is. What do you tell him?

a. 3.1 GHz and 100 b. 100 and 31 c. 3.1 GHz and 31 d. 200 and 31

Write a stub for the following function prototype:

``` double root( double a, double b, double c, int i); // Precondition: a != 0 and a, b, c are coefficients of // a quadratic equation a*x*x + b*x + c = 0 The value // of i is either +1 or -1 to choose which root. // Postcondition: return value, x, satisfies the // equation a*x*x + b*x + c = 0 ```