Asked by dakota

Rajinder collects hockey cards. He currently has 75. He has a plan to collect 12 more each week. after how many weeks will he have a total of 147?

a) write an equation that you can use to solve this problem.

b) solve the equation

c) verify your results and write a concluding statement.
Answered by Reiny
This is an arithmetic sequence with
a = 75 and d = 12
you want term(n) = 147
a + (n-1)d = term(n)
75 + (n-1)(12) = 147
12n - 12 = 72
12n =84
n =7
take it from there
Answered by dakota
im sorry I have not learned that type of way or i don't know im only in grade 8? this is honeslty really confusing?????
Answered by oobleck
after x weeks, he will have
75+12x
cards. So, you want
75+12x = 147
12x = 72
x = 6
Answered by Writeacher
https://www.khanacademy.org/search?page_search_query=arithmetic%20progression
Answered by dakota
ok thanks so much!
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