In April, a Jamaican tourist changed JM $50,000 into American currency. Calculate the amount of US dollars he received. USD $1.00 = JMD $146 a. $7,300,000
b. $342.47
c. $800
d. $85,000

Answer is negative 2

Do you mean conversion factor?

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.