Name: SAT Math Help & School Math Mastery
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#14111

functions

exponential

hard

35 sec

For the exponential function $m$ , the value of $m (- 1)$ is $r$ , where $r$ is a constant. Which of the following equivalent forms of the function $m$ shows the value of $r$ as the coefficient or the base?

A.

$m (x) = 12 (4)^{x - 1}$

B.

$m (x) = 3 (4)^{x}$

C.

$m (x) = 48 (4)^{x - 2}$

D.

$m (x) = 0.75 (4)^{x + 1}$