Find the vale of each variable
There’s 6 questions! Please help!

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults.how many students and adults went if the ticket charge was $42.75

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be