We spend about 30% of our time sleeping. how many seconds does the average person spend sleeping in there lifetime

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

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)

Write a description of each inequality. 1. -5a + 3 > 1 2. 27 - 2b < -6 (this < has a _ under it) 3. 1/2 (c + 1) > 5 (this > has a _ under it)