Carolyn is searching online for tickets to a concert. two weeks ago, the cost was $30. now the cost is $39. what is the percent increase? what would be the percent increase if the ticket agent charges an additional $4.50 fee with the new ticket price?

step-by-step explanation:

5×5×5+2(8)÷2(2)+3(3)

15+16÷4+9

31÷13

do 31÷13 and u will get ur answer

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.