Can someone please help me with this geometry

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Which matrix multiplication is possible?

Jalen charges $25.50 for every 3 hours of yard work he does for his neighbors. ralph charges $34 for every 4 hours of work that he does. who charges less? opinions: 1.they charge the same amount 2.jalen 3.ralph