What is the diameter of a circular swimming pool with a radius of 9 feet? Enter only the number. Help ASAP

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

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?

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)