I need question 4 and 5

Select the quadratic that has root x = 8 and x = -5

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i