For the exponential function

MATHEMATICS · Single correct · AP · AP Precalculus · Exponential and Logarithmic Functions · Exponential and Logarithmic Functions

Problem

p(x)=a b^{x}

, the graph passes through

(0,4)

and

(-2,1)

. Find

b

. (a)

2

(b)

\dfrac{1}{4}

(c)

4

(d)

\dfrac{1}{2}