Question

if $d(x) = 160(1.081)^x$, find $d(40) = \underline{\quad\quad}$

Explanation:

Step1: Substitute x=40 into d(x)

$d(40) = 160(1.081)^{40}$

Step2: Calculate $(1.081)^{40}$

$(1.081)^{40} \approx 22.54$

Step3: Multiply by 160

$160 \times 22.54 = 3606.4$

Answer:

3606.4