Question

Sophie uses a scale to weigh a large stone that she found. Then, she weighs a handful of smaller rocks that are 2 pounds each. The equation y = 2x + z describes the weights of the stone and rocks ( in pounds). What does the variable z represent in this equation.

Please help me with this question

Answer 1

The weight, in pounds, of the large stone.

Explanation:

She uses a scale to weigh a large stone

She weighs smaller rocks that are 2 pounds each

We know that the 2 in the equation of y = 2x + z means the smaller rocks.

She only weighs a single large stone that she found.

The variable z most likely represents the weight (in pounds) of the large stone.