One month Kala rented 7 movies and 9 video games for a total of $85. The next month she rented 5 movies and 3 video games for a
total of $41. Find the rental cost for each movie and each video game.
1 answer:
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this formula, doesn't rely on a product, relies on a "sum", or is namely an arithmetic sequence, aₙ₋₁ -3 is another way of saying, the value of the previous term minus 3, so it relies on the ordinal value of a term, so is an recursive formula, well, let's get it when n = 4.
bearing in mind that an explicit form is simply the sequence written as a function of some variables, so we simply simplify and add like-terms.