CAN SOMEONE PLZ HELP WITH THAT! ITS IMPORTANT PLZ! PLZ TYPE FULL EQUATION THESE ARE SOOO IMPORTANT number one, five, six. (1,5,6)​

Find the value of the variable and the length of each secant segment.

Mr. walker gave his class the function f(x) = (x + 3)(x + 5). four students made a claim about the function. each student’s claim is below. jeremiah: the y-intercept is at (15, 0). lindsay: the x-intercepts are at (–3, 0) and (5, 0). stephen: the vertex is at (–4, –1). alexis: the midpoint between the x-intercepts is at (4, 0). which student’s claim about the function is correct?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.