Solve:
the sum of $2000 is invested at interest-rate r, compounded annually, in 2 years it grows to $2880. what is the interest rate?

3questions show how you solved the problem 1. subtract & simplify (–y2 – 4y – 8) – (–4y2 – 6y + 3) 2.multiply and simplify 2x2y3z2 · 4xy4x2 3.multiply and simplify (x – 4) (x2 – 5x – 6)

Is a triangle with sides of length 6ft, 21 ft, 23 ft. a right triangle?

Mrs. piazza invested 8000 in a certificate of deposit that pays 3% simple interest for 4 years. how much will be in mrs. piazza's account at the end of 4 years