Math I NEED HELP LOOK AT THE IMAGE ALGEBRA IS KILLING ME

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?