I believe the first on is -1 and the second one is NO SOLUTION
The score range that sally would have to make a 90 average is 85-100
Answer:
The error is: The solution shows the Sam's age and the problem asked for Micaela's age.
Solution fixed: 
Micaela is 17 years old now.
Step-by-step explanation:
The error is: The solution shows the Sam's age and the problem asked for Micaela's age.
To fix the error, you can set up these equations based on the information given:
Solve for "s" from the first equation:

Substitute this equation into the second equation:
Now you need to solve for "m":

Micaela is 17 years old now.
$0.15x>$5.00
x>33.3333
So if she sends or receives more than 33 text messages, she will be paying more than $5.00.