I have developed four equations for two functions for a logo. There are 2 functions in the logo, and i have modeled both of them using a quadratic equation and a sine function. The logo is 7.15cm x7.15cm, and i need to stretch the function to fit a logo 2x its size so 14.3cm x 14.3cm. Also i need to fit the logo on a business card that is 9cm x5cm. How do i stretch & modify my functions without destorting the image. (SEE GRAPH BELOW)

Top Line

-.000797x^5+.0118x^4+-.173x^3+1.34x^2+-2.67x+2.52

Quadratic & Green Line

2.75sin(.68295x-2.424)+3.725

Sine & Blue Line

Bottom Line

-.000559x^5+.0104x^4+-.148x^3+.907x^2+-1.12x+.753

Quadratic & Purple Line

1.875sin(.69813x-2.129)+2.225

Sine & Red line.