#### Answer

Red: $10^{x}$
Green: $5^{x}$
Purple: $e^{x}$
Blue:$2^{x}$

#### Work Step by Step

These graphs are related initially because they are all exponential functions. In the modeled $y=b^{x}$ functions, as x increases the value of y will increase exponentially if $b>1$.
Additionally, larger bases ($b$), increase at a faster rate. Hence, $10^{x} \gt 5^{x} \gt e^{x} \gt 2^{x}$ when we look at how fast the function increases.
All of the graphs pass through the point (0,1) because any (nonzero) base to the 0th power is equal to 1.