What is the domain of the function
y=3√6x+42 a. x ≥ 0
b. x ≤ 7
c. x ≥ –6
d. x ≥ –7

The domain of  the function:
y = 3 √ ( 6 x + 42 )
6 x + 42 ≥ 0
6 x ≥ - 42
x ≥ - 42 : 6
x ≥ - 7

The domain is D ) x ≥ - 7
 

The solution to the system of equations (-2,2)