Work out the current through a television with a power of 0.8 kW if it uses the 230 v mains supply

What is the value of x in the diagram below?

Just tell me how to set up the equation.

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?