I need the answers for theses as well

What is the range? can’t seem to find it out

What is the value of x in the equation7x+2y=48 when y=3

Each weekday davina rides her bike from her house to school. after school, she rides to the library. then davina takes the same route to get home. these locations are shown on the grid below, where 1 unit on the grid represents 1 kilometer. how many kilometers does she ride each day? 10 16 20 32