Which expression is equivalent to cos(4x)? 2(2cos2(x) – 1)2 – 1
2cos2(2x) – 1
2cos2(x) – 4
4cos2(x)

What is the vertical asymptotes of the function f(x)=x-2/x*2-3x-4

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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?