Cate and Elena were playing a card game. The stack of cards in the middle had 25 cards in it to begin with. Cate added 7 cards to the stack. Elena then took 7 cards from the stack. Finally, Cate took 3 cards from the stack. How many cards were left in the stack?

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

Solve for x where 0 equation: cot^2x+2cotx+1=0

What are two numbers that have a sum of 15?