Anybody here help me with this assignment?

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

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

not sure but it may be b, as i said i'm not sure.