Algebra 2 questions. 10 points to best answer?

Question

9. 9y2 + 16=0
A. no solution
B. 4/3
C. -4/3
D. {-4/3, 4/3}
E. 16/9
F. -1

10. [CUBERT(2x + 9)]=3
A. -3
B. no solution
C. 0
D. 9
E. -3/2
F. -9/2

11. [SQRT(2x2 + 6x + 4)] = x + 1
A. 1
B. {-3, -1}
C. {-3/2, -1}
D. no solution
E. -1
F. -3

Answer 1

1)Given that

The obtained y value is not there in any option

Hence the answer is option ( A )

2) Given that

Cubing on bothsides

Therefore the answer is option ( D )

3) Given that

Squaring on bothsides

Therefore x = {-3 , -1}

The answer is option ( B )