20 is the answer.
15% of 50= 7.5
45% of 50= 22.5
22.5+7.5=30
50-30=20.
When we say the degree of the monomial, <span>it means that it is the sum of the exponents of all the variables of the monomial. For this expression, the </span><span>degree is </span><span>5<span>(=2+3<span>). Therefore, the correct answer would be 5. Hope this helps you!</span></span></span>