What is the common difference in this equation?
f(n) = 7n + 2

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?

Someone answer this check out the image!

Select all of the following expressions that are equal to 2.5.