Answer:
Step-by-step explanation:
Substitute:
Expand:
Simplify:
Divide both sides by 25:
Plug this back into one of the original equations to find y:
The ordered pair that represents this solution is therefore:
Hope this helps!
6.
Hope you can learn this, you should of just multipled 200 by .30 and then divided that by 20!
101
final cups present-(cups added+cups two guest served)