4.8 is the next term. Because look at the first one is 0.3. To get the next term we double the numbers all the time. So 0.3 doubles is 0.6, 0.6 is 1.2 and 1.2 is 2.4 and 2.4 is 4.8. It’s your last term. Also you made mistake you put - sign near 1.2. Hope this helps.
