If c = the number of cars in a parking lot, which algebraic expression represents the phrase below?
the sum of the number of cars and 9
A. C+9
O O
B. 90
C. C-9
O
o D.
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Alocal concert promoter purchases 2 3/4 pages of ads. when one of the concerts is cancelled, the promoter cancels 1 5/8 pages of ads. how much advertising space is the concert promoter actually using?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Select all of the following expressions that are equal to 2.5.