The discontinuities are x=-4. Because it is a fraction, you cannot divide by zero so if the denominator is set to equal zero, which it will if x=-4, the function will be be undefined
You would put in 12 for x since there are 12 months in a year. Then you would multiply 12 by 35, and add 70.
133.857142857 I’m not completely sure
Yes u only we're it if itsnows
