A group of art students are painting a mural on a wall. The rectangular wall has dimensions of (6 + 7) by (8 + 5) and they are planning the mural to be ( + 4) by (2 + 5). What is the area of the remaining wall after the mural has been painted?

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

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

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base