The ________ method locates the last occurrence of a substring in a string.

With regards to computer programming, how would you characterize "tables, matrices and arrays.

a. Tables are spreadsheets, matrices are abstract mathematical objects, and arrays are like vectors in physics. b. Tables, arrays and matrices are essentially the same things in computer programming terms c. Tables are only used with positive values, whereas matrices and arrays can operate with negatives d. Tables are only used with disk operations, matrices are only used in RAM and arrays can only have one dimension but can be used on either disk or RAM. e. None of the above.

The file extensions .avi, .m4v, and .ogv are used for:

a. audio files b. video files c. Flash media files d. none of the above