What’s the missing value of (x+3y)

What is the percent of increase for a population that changed from 438,000 to 561,000

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.