Answer:
12
Step-by-step explanation:
-x is the slope of the equation.
100-50 = 50
50/5.50 = 9.09 so he can invite 8 people plus himself would be 9 total people
a) because the denominators are the same add the numerators:
1 1/5 + 3 2/5 = 4 3/5
b) rewrite the fractions to have a common denominator:
1/2 = 3/6
1/3 = 2/6
Now subtract:
4 3/6 - 1 2/6 = 3 1/6