An amusement park charges 5$ for admission and 2$ for each ride write an expression for the total cost of admission and r rides how many rides can u go on if u have 16$? ?

C = 5 + 2r

You can go on 5 rides.

First, create the expression for the cost.

c = ?

Since the price of admission is $5, that becomes a term in the expression, so the new expression is:

c = 5 + ?

And since you need to pay for each ride (r) that also becomes a factor in the expression. Giving you:

c = 5 + 2r + ?

There isn't anything else that costs you money, so you can get rid of the placeholder of + ? giving you a final expression of

c = 5 + 2r

Now you need to figure out how many rides you can go on for $16. Lets figure it out.

You first have to subtract the price of admission. So you get

16 - 5 = 11

So after being admitted, you now have $11 in which to pay for rides. Since each ride costs $2, simply divide 11 by 2.

11 / 2 = 5.5

Since you really can't go on half a ride, that means you can go on 5 rides after being admitted to the park.