Which of the following cards is equivalent to the model shown below? (I can't really send a picture since I'm using my phone and can't send the pic correctly)

but it's 8 grey squares shaded out of 20

1. 2/5. 2. 40% 3. 0.35 4. 3/8

A. cards I and II
B. cards I and IV
C. cards I, II, and III
D. Only card II

PLS HELP IK ITS A BAD DEMONSTRATION BUT I NEED HELP

​

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.