Answer:
A retrospective study
Step-by-step explanation:
When you’re looking back, it’s called retrospective. He’s taking his old results and using them to map his success rate with high accuracy.
A prospective study would be to make predictions with lower accuracy of things in the future.
Answer:
There are no options but I guess C
Step-by-step explanation:
Answer:
X × 16 = y+250
Step-by-step explanation:
X × 16 = y+250