Determine the area of the rectangle below 15 times 2 1/2

Answer these questions showing your work plz

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()