how many zeros are in the equation

f(x)=-x^3+8x^2-15x

Points d and e are midpoints of the sides of triangle abc. the perimeter of the triangle is 48 units. what is the value of t? ο ο ο ο 7t +

What is this equation in point-slope form?

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.