Carly tried to solve an equation step by step. \qquad\begin{aligned} -4(7j+2)&=10 \\ 7j+2&=-40&\green{\text{Step } 1} \\ 7j&=-42&\blue{\text{Step } 2} \\ j&=-6&\purple{\text{Step } 3} \end{aligned} −4(7j+2) 7j+2 7j j =10 =−40 =−42 =−6 Step 1 Step 2 Step 3 Find Carly's mistake.

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online