I don’t understand! help!

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

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.

Someone me what is the area of this figure? 18m 18m 8m 16m