Please factor the following expression: 16x^3 + 54y^6

I would really appreciate it. Thanks again! =)

For what value of x does 4x = (1/8) x + 5?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Me. i can't figure out this question. give an explanation too. .