Algebra
posted by Jack on .
Please help me. Please show work.
What are the domain and range of the function y=2 square root 3x + 45?
*A.) X >/= 4/3; Y >/=5
B.) X >/= 4/3; Y >/= 5
C.) X </= 4/3; Y </= 5
D.) X </= 4/3; Y </= 5
Thank You so much.

for √ to be defined, we need
3x+4 >= 0
3x >= 4
x >= 4/3
At x = 4/3, y = 5, so for any x >= 4/3, y >= 5
Looks like (A) all right