Please help what’s the function notation as a ordered pair
F(8)=-5

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

What statement is true? 2x^2-9x+2=-1

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?