Which exponential function is represented by the values in the table?

Step-by-step explanation:

Exponential Function

The exponential function can be written with the general equation:

Where A is the value when x=0 and r>0 is the ratio. If r is greater than 1, the function is increasing, if r is less than 1, the function is decreasing.

The table shows the relation between values of x and values of the function y. Note that as x increases (one by one), y decreases with a ratio of 1/2. Only the last two choices have ratios of r=1/2. We only have to test which one of them has the correct value of y=4 when x=0.

Substituting in the third function:

This gives the correct value of f(0)=4.

Substituting in the fourth function:

This choice is wrong

Correct choice:

10000000000000000000000000000000

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step-by-step explanation: im watching dbz and eating popcorn leave meh alone