Solve the equation. |2x + 4| = 8 a.) x = -12 or x =4 b.) x = -6 or x =2 c.) x = 2 only d.) x = 6 only

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%

Does the point (1, sqrt 7) lie on circle shown.

Can someone me out here number 4 plz