Please help

If angle ACD measures 45 degrees, then angle ACB measures
degrees.

What is the value of x? enter your answer in the box. photo attached.

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.

If a and b are real numbers, then |a-b| is always, sometimes or never equal to |b-a| ?