Answer:
(a) Money spend on each pack will be $0.8
(b) Money send on each pack will be $0.2
Step-by-step explanation:
We have given that Greg spent $4 on 5 packs of spot card
(a) We have to find how much Greg spend on each pack
Cost of each pack will be
(b) In this case it is said that Greg spent half of money
So money spent by Greg
And he bought twice of pack than earlier
So number of packs he bought
So money spend on each pack will be equal to
If each years cumulate an increase of 1100 dollars, then the cost after 22 years will be the base cost (27000) plus 22 increases (22*1100), for a total of
This relates to arithmetic series as follows: a series is arithmetic if, given a starting element , every next element is given by adding a fixed number, called common difference,
. So, the first terms are
So, you can see that the element is obtained by adding n times the common ratio to the starting element.
Since the element represents the cost after n years, we are interested in the element
As we had already calculated.