Write a BNF grammar that describes the structure of a nonterminal called . Assume that contains an optional + sign followed by exactly 2 decimal digits, the first of which cannot be a 0. Thus 23, +91, and +40 are legal, but 9, +01, and 123 are not.

Using this grammar, show a parse tree for the value +90.

Sarah is having a hard time finding a template for her advertising business that she may be able to use at a later date and also make it available to her colleagues

You have inserted new slides based on a word outline. how do you format these new slides to match the powerpoint presentation formatting? a. select all slides in the presentation and click format on the home tab. b. select the new slides and click reset on the home tab. c. select all slides in the presentation and click reset on the home tab. d. select the new slides and click format on the home tab.

The song about casey jones a railroad engineer who gives his life on the job would most likely gall under the folk song category of? a-work song b-nonsense song c-religious song d-ballad