Question

Four pounds of almonds cost $30, 7 pounds of almonds cost $52.50, and

12 pounds of almonds cost $90. Which equation gives the total cost y of
x pounds of almonds?

Answer 1

The second one or y = 7.50x

That is because the four pounds of almonds divided by thirty dollars is 7.50. So if you were to add one more pound of almonds, you would have to pay $7.50 more.