Question

What is the 75th term of the arithmetic sequence -1, 5, 11

Answer 1

75th term = 443

Explanation:

`a_(n)=a_(1)+d(n-1) \\a_(n)=-1+6(n-1) \\a_(75)=-1+6(75-1) \\a_(75)=-1+6(74)\\a_(75)=-1+444\\a_(75)=443 \\\\`