Final answer:
The probability that it takes Jacob fewer than 4 attempts to make his first three-point shot is 94.4%.
Step-by-step explanation:
To find the probability that it takes Jacob fewer than 4 attempts to make his first three-point shot, we need to calculate the probability of making the shot in 1, 2, or 3 attempts.
The probability of making the shot in 1 attempt is 40%. Therefore, the probability of not making the shot in 1 attempt is 60%.
The probability of making the shot in 2 attempts is (40% of 60%), or 24%. Therefore, the probability of not making the shot in 2 attempts is 76%.
The probability of making the shot in 3 attempts is (40% of 76%), or 30.4%. Therefore, the probability of not making the shot in 3 attempts is 69.6%.
Now we can calculate the total probability of making the shot in fewer than 4 attempts: 40% + 24% + 30.4% = 94.4%.