Please help A mistake was made in the steps shown to simplify the expression. Which step includes the mistake?

B.

Step-by-step explanation:

Hello

step 5 is wrong

because 2 + 10/2

is different from (2+10)/2

as there is no parentheses you have the follow the correct priorities

division first, do 10/2=5 and then the addition 5 + 2 = 7

hope this helps

student B is correct

Step-by-step explanation:

we know that 5 dollars will be donated for every 10 tickets sold. so we know that y is dollars donated so if we plug it in, we have 5 =_x . and we know that x represents tickets sold so 10 tickets are sold for 5 dollars donated so now we have 5 = _×10 and now we just fill in the blank, 1/2 times 10 equals 5 so student b is correct