What is the nineteenth term of an arithmetic sequence with first term 9 and common difference 5?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

The measure of angle 0 is 600 degrees

Tan198=asin164=? how to solve this? ?