Help AB and CD are straight lines find z​

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?

What is the factored form of the following expressions? d^2 – 13d + 36

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?