Question

Write an equation the nth term of the arithmetic sequence -5,0,5,10 then find a10

And equation is an=__n-__

a50=___

Answer 1

Explanation:

a(n) = a +(n-1)d

a=-5

d=5

a(n) = -5 +(n-1)5

=-5+5n-5

=5n-10

a(50) = -5 +(50-1)5

= 240

hope this helps