What are all the answers to this screenshot

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

William invested $5000 in an account that earns 3.8% interest, compounded annually. the formula for compound interest is a(t) = p(1 + i)t. how much did william have in the account after 6 years? (apex)

Cuántos triángulos forman un diamante