Your missing exponent would be 3
A) 8/40 = 1/5
b) 12/40 or 6/20
c) 26/40 or 13/20
Hi there!
First we need to remember the following.

Now substitute both of the formulas.

Work out the parenthesis.

And finally collect terms.

~ Hope this helps you!
Answer:
54779098.9847
Step-by-step explanation:
You add them together
John decided to look at new and used cars. John found a used car for $6000. A new car is $18000, so what percent of the price of a new car does John pay for a used car? Round your answer to the nearest tenth if necessary.