Which term has the definition "A relationship in which two variables change at the same rate

Positive correlation

(i believe thats what it is)

To determine how many there are in total/separate, we need to know how many pounds are in 1 ton.

1 ton = 2,000 pounds.

Since we have 3, 5 and 7 tons, let's convert them.

3(2,000) = 6,000
5(2,000) = 10,000
7(2,000) = 14,000

We have either 6,000 / 10,000 / 14,000 pounds as translations, or you maybe want the sum.

To find the sum, we add all the numbers together.
6,000 + 10,000 = 16,000
16,000 + 14,000 = 30,000

Your answer is 30,000 pounds.

I hope this helps!