How many solutions does the pair of equations have 4x+2y=60 12x+6y=180

Cynthia takes her dog to the park every 2 days. she bathes her dog every 7 days. if she took her dog to the park and bathed him today, how long will it be until she does both on the same day again?

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?