Solve for n.

1.7n = 4.08

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

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

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?