What’s the equation for a safe landing

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?

Is there an x intercept in the equation 60*1.15^x