What is the average of -30 -15 -20 55

Find an equation for the linear function which has slope -10 and x-intercept -7

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 f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?