### Home > CCA > Chapter 8 > Lesson 8.1.4 > Problem 8-40

8-40.

A sequence starts –3, 1, 5, 9… Homework Help ✎

If you wanted to find the 50

^{th}term of the sequence, would an explicit equation or a recursive equation be more useful?Write the equation in “first term” form as you did in problem 7-108.

What is the 50

^{th}term of the sequence?Write the explicit equation for the sequence 3, 2

, 2 , 2, 1 ... in “first term” form.

Recall the definitions of explicit and recursive equations.

Explicit.

Refer to problem 7-108 to recall what the first term form means.

*t*(*n*) = −3 + 4(*n* − 1)

Insert 50 for *n* in the equation you found in part (b).