Determine an explicit expression, a recursive process (steps for calculation) from a context. For example, if Jimmy starts out with $15 and earns $2 a day, the explicit expression 2x + 15 can be described recursively (either in writing or verbally) as to find out how much money Jimmy will have tomorrow, you add $2 to his total today. Jn = J n 1 + 2, J0 = 15.