Help me with this thing its so hard $910^5=$

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Sweet t saved 20 percent of the total cost of the green-eyed fleas new album let there be fleas on earth. if the regular price is $30 how much did sweet save

Atotal of 505 tickets were sold for a school play they were either adult tickets or student tickets they were 55 more student tickets so than adult tickets how many adult tickets were sold ?