Jessica purchased a book that was on sale for 12%. The sales tax is 3% key y represent original price of the book write an expression that can be used to determine the final cost of the book. How do I do this, I don’t need a answer just how to do I it lol

if it's 12% then: she's actually paid 88% with a tax of 3%.

Step-by-step explanation:

I did it

step-by-step :

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.