Mark raises guppies in an aquarium. he finds out that guppies reproduce very rapidly, and the number quadruples every month. he starts out with only 2 guppies, and the function y equals 2 times 4 to the x models the number of guppies he will have after x months. which graph represents this function?

In this exercise we have to recognize the graphics given in the images and in this way identify which functions are being represented, in this way we have to:

The exponential function represents a dependency relationship. In this type of mathematical operation there is a variable (unknown) in the exponent and the real number (greater than zero and different than one) in the base.

So we know that the graphs are of exponential functions and their form is given by:

With this form we have that the function of the graph is:

See more about exponencial function at link

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315