Y = f(x) = 4^x
Find f(x) when x = -1.
Express as a decimal, rounding to the nearest
thousandth.

.25

Step-by-step explanation:

f(x) = 4^x

Let x = -1

f(-1) = 4^-1

The negative in the exponent moves the number from the numerator to the denominator

f(-1) = 1/4

  We want the number in decimal form

      1/4 *25/25 = 25/100 = .25

0.250

Step-by-step explanation:

f(x) = 4^x

x = -1

f(x) = 4^-1

= ¼

= 0.250

i believe the correct answer is b.

step-by-step explanation: