Agrey squirrel population was introduced in a certain county of great britain 35 years ago. biologists observe that the population doubles every 7 years, and now the population is 60,000. (a) what was the initial size of the squirrel population?

it is 5 periods - 7 years each, 5*7 =35 years

120000-->60000-->30000-->15000-->7500-->3750

Initial population was = 3750 squirrels

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5