Is this answer true or false?

35+40=36+39

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

Using elimination, what is -4x+2y=-12 4x+8y=-24

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!