rounded to the nearest thousandth: 452.030
To figure this out you first need to determine how many kg there are in 220 lbs. 1 lb equals 0.454 kg, so 220 lbs= 99.88 kg.
It states that a patient receives 7mcg per kg per minute, so the patient will receive 7 x 99.88=699.16 mcg per minute.
You need to convert this to a number of mcg per hour, so multiply the amount by 60 to get 41949.6 mcg per hour.
First, only graph's a and b are linear, meaning the change in each step is the same. This eliminates graphs c and d, which are both exponential.
Next, we need to determine which graph is a negative relationship. In a negative relationship, small values of x mean large values of y and large values of x mean small values of y; this also means the slope is negative. This means graph b has all the properties we're searching for.