Select all the expressions equivalent to 2(x + 3). 1. 2. (x + 3)
2. (x + 3)2
3. 2*x +2.3
4. 2.x+3
5. (2x) + 3
6. (2 + x)3

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Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)