When multiplying numbers a negative number will make a positive into a negative. Yet if multiplied again by another negative it will cancel out or make it positive again. Seeing as answer c has only one negative it's the correct answer.
Answer: x=14
Explanation: the angle needs to equal the other angle, which is 63. To figure this out, we subtract 21 from 63. We get 42. 42 divided by 3 is 14. We are basically doing the equation in reverse.
Like 4 and 8 im pretty sure hope i helped best of luck have a gr8 night :)
As x goes to infinity, f(x) approaches negative infinty
as x oes to negative infinity, f(x) approaches 0
C is answer
Each successive number is divided by 3.
and so on. The next number in the sequence is
, and in general, you have a geometric sequence defined recursively by
and a closed form