True or false ? why and why not ?

7a + 4 - 2a is equivalent to 7a + -2a + 4

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?

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?