Answer:
see explanation
Step-by-step explanation:
given
y = 3x² + 4 ( isolate the term in x by subtracting 4 from both sides )
y - 4 = 3x² ( divide both sides by 3 )
= x² ( take the square root of both sides )
= x, or
x =
60
Because 30 is half of 60
Hope this helps. Pls give brainliest.
NOT B on Edg.