Tia used half of her allowance to buy a ticket to the class play. then she spent $1.75 for ice cream. now she has $2.25 left. how much is her allowance?

1.75 +2.25= 4
4x2= 8.
8 dollars is her allowance. 

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?