Question

Please include steps and answer

Answer 1

x is the number od doubling periods ( which is given as every 7 years)

28 years / 7 = 4 doubling periods in 28 years

 so x = 4

 so you now have:

f(x) = 8000 * 2^4

2^4 = 16

 so 8000 * 16 = $128,000 would be the answer

Please give brainliest.