Here is part of the menu price list at a takeaway.
£1.20
Fish
£2.70
Chips
Peas
£1.60
Rice
45p| Sausage
90p Bread roll
25p| Samosa
30p
75p
Pickled onion
a) Keira buys a sausage, one portion of chips and a samosa.
How much does she pay?
£
b) Taha buys one fish, a portion of peas and a pickled onion.
lowan buys a portion of rice, a sausage and a bread roll.
How much more (in £) does Taha pay than lowan?
Optional working
£

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is

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