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March 29, 2017

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A sequence is generated in which each term is 5 less than the previous term. If the twentieth term is -32, what is the fifteenth term ?

a. -57
b. -12
c. -7
d. 2
e. 7

please answer and explain

  • math ( sequence ) - ,

    There are 5 terms between T15 and T20, so we need to add 5 five times to back up from T20 to T15.

    -32 + 5(5) = -7

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