Pls help me on this question pls and tell me how u got the answer

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?

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2

Equation for the calculation double 2 and then add 5