If Greg spent half as much money and bought twice as many packs of cards how much did he spend on each pack. Explain your answer
1 answer:
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The equation for finding the slope of a line is 
. After substituting in the points, we get
This is a geometric sequence with n th term formula
=
where r is the common ratio and the first term
here = -
and
r = =
= 6
= -
or in terms of x
f(x) = -