Their would be 21 different solutions for this problem
Answer:
See my explanation.
Step-by-step explanation:
y=-2
The life span would be 24 months.
The formula for z-scores is:

Using the information we're given we have:

Multiply both sides by 8 to cancel it:
-3(8) = ((X-48)/8)*8
-24 = X-48
Add 48 to both sides:
-24+48 = X-48+48
24=X