Help please this is due very SOOON!!

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

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.