Which binomial is a factor of x^2-16

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)

Simplify. 3(4+4x) (type your answer in with no spaces)