Question

Hi :) I need help with q8 , new to this so I’m not sure how to solve it. Thank you sm :))

Answer 1

Step-by-step explanation:

for part a

initial means starting point and starting point is always 0

so the question means number of thousands of bacteria in 0 hours, your n being the number of hours. so in part a u will simply just put 0 as n in equation

2^(0+3)

2³=8 thousands of bacteria

in part b

2^(n+3) means total number of bacteria

2^(n-1) is number of groups

its asking for number of bacteria in each group

so u will simply divide number of bacteria by groups

its like u have 30 candies and there are 5 groups and they ask u to find number of candies in each group so u simply divide 30 by 5

so 2^(n+3)/2^(n-1)

base is same so powers will subtract since there is division sign

2^(n+3-(n-1))

2^(n+3-n+1)

2^(3+1)

2^4= 16 thousands of bacteria in each group