Find the coordinate of J' after a reflection of the triangle about the y-axis. Write your answer in the form (a, b)

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Which of the following is the result of expanding the series

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.