midterm I

grade scale:

14.25 <= x <= 15.00    A+
14.00 <= x <  14.25    A
13.00 <= x <  14.00    A-
12.35 <= x <  13.00    B+
11.25 <= x <  12.35    B
11.00 <= x <  11.25    B-
10.35 <= x <  11.00    C+
10.00 <= x <  10.35    C
 9.00 <= x <  10.00    C-
 8.00 <= x <   9.00    D
    0 <= x <   8.00    F