you have to look at the number the tickets are being sold by. they are being sold by three then think about how the third ticket cost equals to $2.40. think what number you could add 3 times to get $2.40. then use 80 and add it 3 times to get 240.
For the second question, your first option is correct, you would rewrite 8 in power-base form 8=2^3 as the first step to solving the equation, power base form is exponential form.
