(Score for Question 3: ___ of 5 points) You purchase a car using a $20,000 loan with a 5% simple interest rate.
Suppose you pay the loan off after 4 years. How much interest do you pay on your loan? Show your work.
Suppose you pay the loan off after 2 years. How much interest do you save by paying the loan off sooner? Show your work.

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?