How many pounds of gourmet candy selling for 1.80 per pound should be mixed with 3 pounds of candy selling for 2.60 a pound to obtain a mixture selling for 2.04 per pound?

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.