Please hurry if you can I really appreciate it if you can help me with this problem

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer