The answer would be: 4/5 + 3/5 = 7/5 ≈ 1.4
Refer to the picture below for detailed steps:
Answer:

Step-by-step explanation:
<u>Addition Law for Probability</u>

Given:



Substitute the given values into the formula and solve for P(A ∩ B):





your average mean score would be <u>C. 85</u>