Which ordered pair is a solution to the equation? 3x + 7y = 13

a.) (13, 2) b.) (4, 1) c.) (3, 1) d.) (2, 1)

What number should be added to both sides of the equation to complete this square? x^2-10x=7

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

28 x 12 + 34 = ? it's for a test that if i fail on i will not proceed into the honor roll society i always dreamed of!me! worth 50 !