Given two terms of the arithmetic​ sequence, a8=30 and a13=−15​, find a1 and d.

a1 = ?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

This is about circle theorems. someone asap : (