7.99999999999 is very close.
X + 1
Combine like terms, so terms with x go together and terms without an x go together
So 2x - x = x
3 - 2 = 1
That's as simplified as it can be
Well i got -19/6 but if you simplify it it would be -3.16667
Since each table had 7 women and 3 men at each table, that would mean each table has 10 people. Since there are 9 tables he was waiting on, and 10 people at each table, multiply 9 x 10, and you will find that he served 90 people in total.
$4.50
To find this, take the total amount and subtract it from the given amount he spends:
18 - 9 = 9
With this information, you know you need to get two of the same birthday cards with the left over money, meaning you need to split the final answer in half. So, 9 divided by 2 is 4.50.
Hope this helps!
