Jacob spins the spinner 120 times.
There are 6 color options.
Therefore, for 1 round we have the next probability to land on red:
1/6
Now, for 120 rounds, we can find the solution when we multiply the probability for one round by 120 rounds.
Hence,
(1/6)*120 = 20
So, he can expect at least 20 times to land on red.