Which equation represents a quadratic function with a leading coefficient of 2 and a constant term of -3

If square root x = -7, then x= -49 true or false

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?

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9