The graph of f(x) = x2 has been shifted into the form f(x) = (x − h)2 + k. what is the value of k?

Assuming that this is the graph 

we can see that y = x^2 touch origin,
 
now it's shifted into (4, -2)

So the new equation woud be :

f(x) - 4 = (x + 2) ^2

f(x) = (x+2)^2 + 4     ,  .. . . .> which make k = 4

hope this helps

$12,$11,$10,$9

Step-by-step explanation:

As the starting price is $12, the first piece of information they give you is the number of cans + the discount each one gives, meaning that the table should have two titles being cost and cans. The number of cans should be at the top with the price being put below for example. cans:  0    2   4    6 cost:  12   11   10   9 that is the table; the equation to figure this out would be if you say that 1 can is = to "x" then the equation becomes much easier to write down and you can simply write it down for each price cost = 12 cost = 12 - 2x = 11 cost = 12 - 4x = 10 cost = 12 - 6x = 9 making x worth 0.5