A drawing has a scale of 1 mm: 20 cm. What
is the scale factor of the drawing?

The scale factor of the drawing is 200.

The first step to take when looking for the scale factor of a drawing is to ensure both measurements are on the same unit.

Given a scale for a drawing to be:  1 mm: 20 cm

1 cm = 10 m

Therefore:

20 cm = 200 mm

Scale factor = 200/1 = 200.

Therefore, the scale factor of the drawing is 200.

Learn more about scale factor on:

link

Option A : the interest for the shoe charge is $2.45.

Step-by-step explanation:

As given, Bank card is charging 1.4% monthly interest on credit card charges.

This amount is charged on $175.

We have the interest value as :

dollars

Hence, the interest for the shoe charge is $2.45.