700/200=7/2 because devide by 100 and then=3 1/2 and half is .5 so=
3.5
The answer is D $126,if three cost $54 that means one costs $18 and just multiply it with seven
So you write into the table that x = 1 then y will equal 1*1.5 which equal to 1.5. So under x = 1 in y table you write y = 1.5, and so on