Известно, что 3<t<4 Какое неравенство справедливо для 2t+1

1. 8<2t+1<10
2. 4<2t+1<6
3. 6<2t+1<8
4. 7<2t+1<8
5. 7<2t+1<9

Помогите, пожалуйста(
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