Plz help me out I’m confused 25 points

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14