The cost of making a phone is $152. A store sells the phone for $281.20. Select all the expressions that could be used to find the percentage of markup for the phone.

Just tell me how to set up the equation.

Ineed with number 6 , explain how to get 1978

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.