What is the distance, in units, between -5, 8 and 4, -4 in the coordinate plane

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.

The function f(x) is shown in this graph the function g(x)=6x

Which is the area, rounded to the nearest tenth of square inch, of an equilateral triangle that has a perimeter of 24 inches