Kiera has 27 balls of yarn. her mother gave her 5 more balss. if she makes scarves that use 4 balls each, how many scarves can she make?

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

Me. i can't figure out this question. give an explanation too. .

Find the missing dimension extra points