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(a) Determine whether function whose values are given in the table below could be linear or exponential.

$x =$	0	1	2	3	4
$y =$	22	16	10	4	-2

Find a possible formula for this function.
$y =$ help (formulas)

(b) Determine whether function whose values are given in the table below could be linear or exponential.

$x =$	0	1	2	3	4
$y =$	2	16	128	1024	8192

Find a possible formula for this function.
$y =$ help (formulas)