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:

What is the exponential function?

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

The graph of the function that models the reproduction of the guppies in the aquarium is of the exponent form, where its base is 4 and X is the exponent.
 The domain of this function is the set of all real numbers and the range are all positive reals.
 The function is close to zero for negative values of X, but for positive values it grows rapidly.
 Below is a graph of the aforementioned function:
 y = 2 * (4 ^ x)
 For x between -1.5 and 0.5 and for x between -6.5 and 5.5

Do the math. she originally had 50 dollars on her gift card and she had 12 dollars left on her gift card after she finished her shopping spree. if you subtract 50 minus 12 you get thirty eight dollars as your answer. so therefore, ciara spent 38 dollars total o

270 books in each shelves