Find the sum of the given polynomials. 3x ^2 + 2x - 5 and -4 + 7x ^2

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

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.

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?