I REALLY NEED HELP WHAT IS 1+1

What is the difference between the predicted value and the actual value

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height