Solve 1) f(x) = 2x+6

Identify
a) The Domain
b) The Range

Can any one me with the answers to these questions asap?

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?

Find the area of the triangle shown 3 by 6