Question 23348
1. y=x^2+3
 Domain:  x can take any real number value.
 Range: Since x^2 is always >=0 x^2+3 is 
 always >=3.  So, range is >=3


2. 3-4x=y
Domain: x can take any real number value.
Range: y will cover all real number values.

Cheers,
Stan H.