Is there a proportional relationship between number of sandwiches and the cost of the order? Explain how you know. (In the picture are my answers so you guys can see them, but what I need to know is if they are proportional or not, and why.)

(20 points)

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?

Ametal rod is 2/5 meters long. it will be cut into pieces that are each 1/30 meters long. how many pieces will be made from the rod?

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c