Where does the minimum or maximum value occur? what is the functions minimum or maximum value? f(x) = -2x - 20x-51​

maximum is at (-5,-1)

Step-by-step explanation:

find the vertex, I used a graphing calculator and it's (-5,-1) so the maximum is at (-5,-1), x=-1, y=-1 (dunno how they asked you to answer I assume the point but I don't know)

there isn't a minimum since it would go to negative infinity

hope this helped

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.