When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

If 1/2+2/5s=s-3/4,what is the value of s? a. s=3/4 b. s=25/12 c. s=-25/12 d. s=-3/4

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?