THE ANSER is commutative property of addition
5 1/4 as a decimal is 5.25
this is because 1/4 is equal to 25/100
2x-6=52 x= alternative schools
2x=58
x=29
There are 29 alternative schools in the county.

is undefined where the denominator is zero. The domain is all values of x for which the function is defined.
The domain of f(x) is all real numbers except 13.