Yo im giving away more points to people, only 12 sorry

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

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?

What percent of 18 is 24? and plz explain thx.