An item is regularly priced at $60. It is on sale for 40% off the regular price. What is the sale price?
2 answers:
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Geometric series are in the form of
Where a is the first term and r is the common ratio .
And it is given that
r=-3,2
So the first five terms are
= 2-6+18-54+162 or 2+4+8+16+32
= 122 or 62