The product of 2 and the sum of 9 and -6, subtracted by 5, equals what number

What multiplys to be 1 but adds up to be 4

What is perpendicular to y=-1/2x+11

Which statement is true about the function f(x)= square root -x ? the domain of the graph is all real numbers. the range of the graph is all real numbers. the domain of the graph is all real numbers less than or equal to 0. the range of the graph is all real numbers less than or equal to 0.