8.) Simplify each expression:
a.) 2x + 4x + 8x
b.) 5(x + 2) + 3x
c.) 6(2x + 1) - 5x + 7

Natasha spent 1 1/2 hours on the beach. she fell asleep for 3/4 of the time she was on the beach and then woke up with a terrible sunburn.how many hours was natasha asleep on the beach?

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft