Describe a real-world situation in which opposite quantities combine to make zero. represent addition and subtraction on vertical and horizontal number line diagrams. demonstrate how to add two numbers using absolute value and a number line diagram.\ interpret sums of rational numbers by describing real-world situations.

When your friend gives you money to borrow because you have 0. But then you have to pay them back to now you have 0 dollars again! I hope this made sense! If it did please mark me as brainliest!!

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have