Horatio drew a circle with a radius of 6x cm. kelli drew a circle with a radius of 18y cm. what is the scale factor between these two circles? (this is a quiz question, you will recieve a medal for best answer)
a. x/3y
b. 2x/3y
c. 1/3
d. 2/3

The scale factor of these two circles is the ratio of their radii. This is shown below,
                               sf = r1 / r2   =   6x/18y
Simplifying the fraction by dividing both the numerator and the denominator by 6 gives an answer of x/3y. Thus, the answer is letter A. 

25% downpayment of $750 + $125 x 24 months

= $3750