Giselle has $40 to spend on parking this month. parking costs her $2.50 each day. after giselle parks for 9 days

Giselle has spent more than 1/2 of her parking money.

Explanation:

She has $40 dollars and parking lot cost $2.50 and she pays $2.50  for 9 days.

you need to multiply 2.50 * 9 and equals 22.5

now you need to subtract $40 - $22.5 and equals $17.5

now we need to know what is 1/2 of 40 and is 20 since $17.5 is less  than $20 Giselle has spent more than 1/2 of her parking money.