The scale on a map is ½ inch = 15 miles. how far apart are two towns that are 2 inches apart on the map? someone me !

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

Find the domain of the following expression: 1/(√x)-2

Give the functions f(x) = |x + 2| - 3, what is the domain? a,b,c, or d all real numbers x > 2 x < -2 all real numbers and x cannot equal to 2