$900+ $288( interest after 8 years)= $1, 188( total balance)
I’m going to need a bit more information to offer help on this question. I’m sorry
Do you mean 7 more than the product of 5 and a number? If so the answer is... y=7+5x
57 = 3 * 19 so he drank 97 * 3 = 291 calories (answer)