Pearson Algebra 1 Common Core, 2011
PA
Pearson Algebra 1 Common Core, 2011 View details
7. Arithmetic Sequences
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Exercise 76 Page 281

Substitute values for n=1,2,3,4 to find the first 4 terms.

C

Practice makes perfect

We are given an explicit rule of a sequence and are asked to find the 7th term. A(n)=- 9 + (n-1) (0.5) To do so, we will substitute 7 into the equation and solve for A(7).

A(n)=- 9 + (n-1) (0.5)
A( 7)=- 9 + ( 7-1) (0.5)
A(7)=- 9 + 6(0.5)
A(7)=- 9 + 3
A(7)=- 6

The seventh term is - 7. Therefore, the correct answer is C.