Marie sells magazine subscriptions. she earns $15 a week plus $3 for each subscription she sells. how many subscriptions must she sell to earn $90 in one week? a 30 subscriptions b 40 subscriptions c 25 d 100

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.