Which is equal to 7(3.5x10^4)written in scientific nation

What is the value of x? enter your answer in the box. photo attached.

Which ahows the graph of the solution set of 6x+4y< 12

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.