Gary purchased a dvd that was on sale for 15% off the sales tax in his county is 5% let X represent the original price of the dvd. Write a expression that can be used to find the final cost of the dvd
Detailed explanation please :) that way I’ll understand it if I come along a problem like this again
First, he gets it on sale, so (x-0.15x = 0.85 x)Then, take that 0.85x and multiply it by 1.05 (to add the sales tax). So the result is (0.85 x)(1.05) = 0.8925 x
