[tex]\huge\boxed{417}[/tex]
Start with the formula for an arithmetic sequence, where [tex]a_n[/tex] is the [tex]n[/tex]th term of the sequence and [tex]d[/tex] is the common difference between terms.
[tex]a_n=a_1+(n-1)d[/tex]
Find the difference between any two consecutive terms.
[tex]25-18=7[/tex]
Substitute the known values into the formula.
[tex]a_{58}=18+(58-1)7[/tex]
Subtract.
[tex]a_{58}=18+57*7[/tex]
Multiply.
[tex]a_{58}=18+399[/tex]
Add.
[tex]a_{58}=\boxed{417}[/tex]
