How hard are you prepared to work?
The first 4 questions are giveaway marks. In all seriousness, if you do enough papers you'll have them out of the way with 95% of the marks in 60 minutes, possibly less. Questions 5 and 6 you should be able to recognise at least 50% of the content from previous questions and get it easily. So that gives you so far 62.5% of the marks should be easily gettable by any 4u maths student within the first 90 minutes. Then you have another 90 minutes at your disposal, and even if you only manage to add another 10% to that total, you'll be around 90/120, and sitting on a probable band E4.
The key to recognising that 62.5% is doing past papers. Do at least 40 and you should be fine, combine that with a bit of natural ability and you're set for a mid band E4.