Need help please regular photos don’t catch the problem

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%

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120