Question

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Answer 1

Answer:

B

Step-by-step explanation:

3t+6=9 or -9
1. 3t+6=9

3t=9-6=3

t=3/3-=1

2. 3t+6=-9

3t=-9-6=-15

t=-15/3=-5

t=1, -5

Answer 2

Answer:

B {-5, 1}

Step-by-step explanation:

Separate into possible cases

3t + 6 = 9

3t + 6 = -9

Solve the equations

t = 1

3t + 6 = -9

The equation has 2 solutions

t = -5

t = 1