Question

Jade had 3 dollars. She found 75 cents and then bought a book. She ended up with 5 quarters. Which expression equals the number of dollars Jade spent on the book?

Answer 1

She starts out with 3 dollars, and then she found 75 cents. 5 quarters are equal to $1.25.
The equation would be: (3 + 0.75) - 1.25

Answer 2

3 + .75 - x = 5(.25)
3.75 - x = 1.25
-3.75        -3.75
-x=-2.5
x=2.5
she spent $2.50