Write ONE system of equations that is clearly easiest to solve using the GRAPHING method, ONE that is clearly easiest to solve using the SUBSTITUTION method, and ONE that is clearly easiest to solve using the ELIMINATION method. PLEASE I NEED HELP ASAP!!!

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

41/17 as a decimal rounded to the nearest hundredth