The federal government spends $25.2 million each year to operate parks and historic sites in Washington D. C. This is $7.8 million more than it spends to run Yellowstone National Park. How much does it cost to run Yellowstone National Park? Write an equation to model the following situation. Use y as your variable for Yellowstone.

y + 7.8 = 25.2

y = 17.4

Step-by-step explanation:

y + 7.8 = 25.2

(now we solve the equation we substract 7.8 from each side of the equation )

y = 25.2 - 7.8

y = 17.4

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.