Use the diagram below if m

Three times the sum of a number and seven is negative thirty-six. what is the number?

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.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?