I already have the other answers just need an explanation i will give brainliest to whoever gets it right so if it's not right u don't get it

What is it for???

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.