Need urgently! will give brainliest, a and 50 points 2. what steps would you take to solve a real-world problem? 3. explain two methods for solving an equation. give an example. 5. what does it mean if a situation has a condition, or constraint? give an example.

10

step-by-step explanation:

i think it would be 42cm

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