Marcy is buying prizes to give away at a fundraiser, as described below. • She has $250.00 to spend. • She buys 13 movie passes for $9.50 each. • She buys 3 gift cards valued at $25.00 each. • She will use the rest of the money to buy candy bars that cost $1.75 each. What is the greatest number of candy bars she can buy with the rest of the money?

Marcy spends $9.50 x 13 = $123.50 on movie passes.

She spends $25 x 3 = $75 on gift cards.
So, she spent a total of $123.50 + $75 = $198.50 on movie passes and gift cards.
Therefore, she has $250 - $198.50 = $51.50 left to spend on candy bars.
To find the greatest number of candy bars she can buy, we divide the remaining money by the cost of each candy bar: $51.50 ÷ $1.75 = 29.43.
Since she cannot buy a fraction of a candy bar, the greatest number of candy bars she can buy is 29. Answer: \boxed{29}.