Q. b(n)=−8−2(n−1)Find the 9th term in the sequence.
Understanding the sequence formula: Understand the sequence formula.The given sequence formula is b(n)=−8−2(n−1). This is an arithmetic sequence where the first term is when n=1.
Plugging in the value for the 9th term: Plug in the value for the 9th term.To find the 9th term, we substitute n=9 into the sequence formula: b(9)=−8−2(9−1).
Simplifying the expression: Simplify the expression.Simplify the expression inside the parentheses first: b(9)=−8−2(8).
Performing the multiplication: Perform the multiplication.Now multiply 2 by 8: b(9)=−8−16.
Combining like terms: Combine like terms.Add the numbers together to get the 9th term: b(9)=−8−16=−24.