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

Option 4

Step-by-step explanation:

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

The fastest way to solve this problem is to replace the point (2, 80) in the options 3, and option 4.

make x = 2 and check function

3.

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

4.

The function 4 is equal to 80 when x = 2.

Then the correct option is option 4

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.

lo.lll

step-by-step explanation: