What is the solution to the following equation?
x^2+2x+7=0

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Can someone tell me if this is perpendicular? !