Answer:
This is an improper fraction so we need to make it a mix fraction.
Step-by-step explanation:
21/10 = 10/10+10/10+1/10
10/10=1
So your final answer will be 
I would say A because you would expect that less than half of them are out of state as more then half in the study are in state.
Multiply 18 by12.50 =225
multiply 18 by 5 = 90
add 225+90=315
subbtract 350 from 315 =35
35 is how much she had left over
Answer:
27
Step-by-step explanation:
2/3x27=18
18+4=22
Answer:
He will save $1.995 if he purchases it in the neighboring county
Step-by-step explanation:
Don's county:
Sales tax of 7.75%.
So he pays
399 + 0.0775*399 = $429.9225
Neighboring county:
Sales tax of 7.25%.
So he pays
399 + 0.0725*399 = $427.9275
Savings:
429.9225 - 427.9275 = 1.995
He will save $1.995 if he purchases it in the neighboring county