melissa makes apple pies and sells them with a markup of 78%. write an equation representing the retail price y of melissa's apple pies in terms of the original cost x.

Answer:Equation representing the retail price y of apple pies in terms of the original cost x  is      y = 1.78 xStep-by-step explanation:The original cost of apple pie = xThe mark up percentage = 78%The retail price of the apple pie = yNow, the mark up is always applied on the original price.⇒78%  of x  = [tex]\frac{78}{100} \times x = 0.78x[/tex]So, the marked up amount of pie = 0.78 xAlso, the Total Retail price = Original Price + Marked up Price                                              = x+ 0.78 x = (1+ 0.78)x  =  1.78 xor, y = 1.78 xHence,equation representing the retail price y of apple pies in terms of the original cost x  is y = 1.78 x