#### Question

#### Answer

Since we know the values of the first term, a_1=10 , and the common difference, d =5 , substitute these values in the arithmetic formula.

a_n=a_1+(n-1)d

We get,

a_n=10+(n-1)5

=5n+5

Since we know the values of the first term, a_1=10 , and the common difference, d =5 , substitute these values in the arithmetic formula.

a_n=a_1+(n-1)d

We get,

a_n=10+(n-1)5

=5n+5