In 2012, the population of a city was 5.775.77 million. the exponential growth rate was 3.033.03% per year.
a) find the exponential growth function.
b) estimate the population of the city in 2018.
c) when will the population of the city be 88 million?
d) find the doubling time.

answer:

the answer is b

step-by-step explanation:

a) find the exponential growth function.

a(t) = 5.72*3.79^t

​b) estimate the population of the city in 2018.

a(6) = 5.72*2.79^6

​c) when will the population of the city be 88 ​million?

solve for "t": :

88 = 5.72*2.79^t

2.79^t = 15.38

t = log(15.38)/(log(2.79)) = 2.66 years

ans: : 2018 + 2.66 yrs = 2021

​d) find the doubling time.

2*5.72 = 5.72*3.79^t

3.79^t = 2

t = log(2)/log(3.79)

t = 0.52

ans: : 2018 + 0.52(12 mts) = 2018 and 6 mts

idk im srry

step-by-step explanation:

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions