A few questions on my practice exam for the exam on Monday morning, help if you can please!

Question 1:

The results of a provincial exam are normally distributed with a standard deviation of 6.54%. If 10% of students scored below 55% on the exam, find the value of the mean.

Question 2:

Rich breaks the speed limit 70% of the time. What is the probability that he will break the speed limit exactly 8 times in the next 10 trips? Express answer the nearest hundredth.

Again thank you for all the help and support!