Suppose that S and T are on points on the number line. If ST=20 and S lies at 3, where could T be located?

Can someone check my answer? you

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

On a cm grid, point p has coordinates (3,-1) and point q has coordinates (-5,6) calculate the shortest distance between p and q give your answer to 1 decimal place