9514 1404 393
Answer:
x ≥ 1/5
Step-by-step explanation:
The expression will evaluate to a real number only when the value under the radical is not negative.
-3(1 -5x) ≥ 0 . . . . the condition that makes the expression "make sense"
-3 +15x ≥ 0 . . . . . use the distributive property
15x ≥ 3 . . . . . . . . add 3
x ≥ 3/15 . . . . . . . divide by 15
x ≥ 1/5 . . . . . . . . . reduce the fraction
