Brian buys bikes to resell. he applies a mark up of 15%. write two expressions to represent the selling price. let (b) represent the original cost of the bike.

You can do it and if you can't then I will tell you

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!