-x + 5x - 2x + 7 ?? i don’t know the answer

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys