Question

Only need help with part b!!
S5 higher maths(year 12/11th grade)

Answer 1

Answer: D: x ≥ -2/3

Explanation:

g(x) = 3x + 2 j(x) =
`√(x)`

b. j(g(x))

j(3x + 2) =
`√(3x+2)`

In order to be a Real number, the number under the radical must be greater than or equal to 0.

3x + 2 ≥ 0

3x ≥ -2

x ≥ -2/3