Question

What is the 308th term of the sequence 11,12.5,14,15.5,17...

Answer 1

`\huge\boxed{471.5}`

The formula for an arithmetic sequence is as follows:

`a_n=a_1+(n-1)d`

In this formula,
`a_n` represents the
`n`th term of the sequence and
`d` represents the common difference between each term.

Plug in the known values.

`a_(308)=11+(308-1)1.5`

Subtract.

`a_(308)=11+307*1.5`

Multiply.

`a_(308)=11+460.5`

Add.

`a_(308)=\boxed{471.5}`