On a piece of paper graph (x) {6 if -5 _< -1/{4 if -1< x _<2/{2 if 2< x_<5. Then determine which answer choice matches the graph you drew

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)