Math Help - please help i thought i had this one all figured out but i was wrong

ok here is my question that i am trying to solve, ive tried solving it but my answer is always wrong so if anyone has any idea what it is please share and thank you so much.

A baseball team plays in a stadium that holds 60,000 spectators. With the ticket price at $10, the average attendance at recent games has been 30,000. A market survey indicates that for every dollar the ticket price is lowered, attendance increases by 2000.(a) Find a function that models the revenue in terms of ticket price. (Let x be the ticket price and R(x) be the revenue.)

R(x) =

a) f(x)= (30,000+2000x)(10-x)
I believe this is it.

If you don't explain HOW you got the answer or, at least, tell why you "believe this is right", there really isn't much point in just giving a result.

jenlee, let "P" be the cost of a ticket. Then 10- x is the number of dollars the price has decreased from $10 (or increases if x is negative). if "With the ticket price at $10, the average attendance at recent games has been 30,000. A market survey indicates that for every dollar the ticket price is lowered, attendance increases by 2000", then the attendance is 3000+ 2000(10- x). Since each of those pays 10- x dollars for a ticket, the revenue is R(x)= [30000+ 2000(10- x)]x. You may want to multiply that out to give it in its simplest form.

ok thank you both for your help but when i did the problem and i completed it by multiplying it out i got -50,000x^2+2,000x and the answer key says i am still wrong. i also tried it with 50,000x^2 +2,000x and this is also wrong any ideas what i did wrong now thanks


HI EVERYBODY THANKS SO MUCH FOR YOUR HELP JUST FIGURED OUT WHAT WAS WRONG WASN'T USING MY COMMA IN THE NUMBERS
AGAIN YOU ALL ROCK