Carlos purchased an antique chair for $56. He later sold the chair for $68 to an antique
dealer. What was the percent markup of the
chair?

Is the open sentence 5x-2=3x+2 true when x=2? justify your answer.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin