Check the picture below, so the hyperbola looks more or less like that.
based on the provided vertices, its center is at the origin, as you see there, the "a" component or traverse axis is 4, the "c" distance is 5.

Theres not really any way to tell because the cost per widget is highest when making three, lowest when making 7, but then increases when making 12. If the cost didnt rise when making 12 and instead followed the trend of the more widgets you make, the cheaper it is per widget
The best way to solve this is to set up a proportion
84 21
---- = ------
x 100
then you cross multiply and divide
100 × 84 = 8400 ÷ 21 = 400
84 is 21% of 400
Answer:
120
Step-by-step explanation: because you add 20 twice and thts 40 and 40 times 3 is 120
The answer is C.
4x-y=-8
-y=-4x-8
y=4x+8
y=4x+8
0=4x+8
-8=4x
-2=x