What number could be a value of x which makes the following inequality true? 3x < 15

Anyone know? will mark brainliest if correct!

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?