Are 15: 35 and 25: 45 the same thing]

Which of the following properties can be used to show

What is the area of triangle abc if a = 8, b = 11, and c = 15?

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?