What is the average time a caller waits for an operator to answer?

In which phase does software coding and testing happen in the spiral model? the spiral model does not have a separate testing phase. both, software coding and testing occurs during the phase.

Aselect query joins tables together by their a. table names. b. primary keys. c. first entries. d. field names.

Your mother is sure that you were driving too fast because she knows a. when you arrived and the direction you came from. b. how long it took you to get home and how far you traveled. c. what time you left and how long it took you to get home. d. the direction you were driving and how far you traveled.