I need help with this
Write the following number in decimal notation.
Nine and three hundred twenty-one thousandths

Which of the following is true for the relation f(x)=2x^2+1

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

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?