Would the scale factor 4/5 reduce, enlarge, or preserve?
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would the scale factor 7/2 reduce, enlarge, or preserve?

4/5 will reduce and 7/2 will enlarge.

Step-by-step explanation:

Ok, a scale factor is a number that can affect a given quantity, suppose the length of a segment, by multiplicating it.

Now, if the scale factor is greater than one, you will be doing a dilatation (this means that the length is increased)

If the scale factor is less than one, you will be doing a contraction (the length will be decreased)

If the scale factor is 1, you are preserving, this means that the scale factor = 1 does not affect the system.

now, we have:

4/5) here, because the numerator is smaller than the denominator we know that the fraction 4/5 must be smaller than one, so this scale factor will reduce.

7/2) Here we have that the numerator is greater than the denominator, so this number is greater than one, then this scale factor will enlarge

you never say the total so we cant find the percentage used for petrol

step-by-step explanation: