Question

40Points? CORRECT answer please

Answer 1

f(-2) = 12.5

Explanation:

`f(t)=2(0.4)^t`

f(-2) → put t = -2 to the equation of the function:

`f(-2)=2(0.4)^(-2)=2\left((4)/(10)\right)^(-2)=2\left((2)/(5)\right)^(-2)`

Use
`a^(-n)=\left((1)/(a)\right)^n`

`f(-2)=2\left((5)/(2)\right)^2=2\left((25)/(4)\right)=(25)/(2)=12.5`