If y = -252 when x = 84, what is y when x=74?

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

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?

Ill mark the brainliest if you me with the these three questions 7,8,9