Maths-
SAT
Easy
Question
For the exponential function f, the table shows some values of x and the corresponding values of f(x). The function can be written in the form f(x)=prx, where p and r are constants. What is the value of r?
The correct answer is: 4/3
f(x) = prx
f(0) = pr0 = 9
p = 9
f(1) = pr1 = 9(r)1 = 12
.
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