Which equation represents an exponential function that passes through the point (2, 80)? f(x) = 4(x)5 f(x) = 5(x)4 f(x) = 4(5)x f(x) = 5(4)x
correct answers only .

Option 4

Step-by-step explanation:

The fastest way to solve this problem is to replace the point (2, 80) in the given options.

make x = 2 and check function

1.

-----------------------------------

2.

----------------------------------

3.

---------------------------------

4.

The function 2, and 4 are equal to 80 when x = 2. However, functions 1 and 2 are not exponential functions because they do not have the form

.

Where:

a is the main coefficient

b is the base

x is the exponent

Then the correct option is option 4

no

step-by-step explanation: