Question

Can someone please help will mark brainlist

Answer 1

Answer:

You can complete the mission 5 times before you earn less than 400 points.

Explanation:

$100(0.8)^n^-^1 < 400$

$(0.8)^n^-^1 < 0.4$

$log 0.8^n < log 0.32$

$n > 5.1$