Answer is 12cm. I just need the working. Tysm

What is (28 + 7 + 6 + 3) x 1/2 show your work

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

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.