Can someone help me :)

Step-by-step explanation:

Constants are terms that do not contain variables in an equation, term, or expression.

Examples: 2, 4, -8, 16, 22, 0.3, , -2.2, π

As you can see, these are only integers, nothing more.

Non-examples: 2x, -y, yx, -7k, , 6x², a, 8mn, p², p, 1.1p², 4 + b

These values contain variables, so they are not defined as constants.

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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