Find the surface area of the pyramid.

Geometry answer picture question pls . reason and statements

Which expression is equivalent to? assume x > 0 and y > 0.

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1