First you get both distances 9.3 x 107 = 995.1 miles 8.87 x 108 = 957.96 miles then you subtract them both 995.1 - 957.96 = 37.14 miles and 37.14 miles is the distance between Earth and Saturn.
8.6 plus 8.2 is 16.8 so they had a total of 16.8 ounces. $0.50 per ounce so you need to multiply 16.8 by 0.50 which is 8.40. you can also do 8.6(0.5) plus 8.2(0.5)= 4.3 plus 4.1 = 8.4
