Answer:
50% increase
Step-by-step explanation:
120 - 80 = 40
40 = 50% of 80
Answer:
Infinite solutions
Step-by-step explanation:
2x -1 = x + x -1
2x=x+x
2x=2x
Answer: 0
<u>Step-by-step explanation:</u>

1 = mˣ
1 = m⁰
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Answer: 
<u>Step-by-step explanation:</u>
log₁₀ (1 - 6x) = 2 restriction: 1 - 6x > 0 ⇒ x < 
1 - 6x = 10²
1 - 6x = 100
<u> -1 </u> <u> -1 </u>
-6x = 99

x = 
**************************************************************
Answer: 
<u>Step-by-step explanation:</u>
= 3ˣ
= 3ˣ
= 3ˣ
= 3ˣ

**************************************************************
Answer: 
<u>Step-by-step explanation:</u>
ln 2 + ln x = ln 5 + ln (4x - 2)
ln (2(x)) = ln (5(4x - 2))
2x = 5(4x - 2)
2x = 20x - 10
<u> -20x </u> <u> -20x </u>
-18x = -10


Answer:
Part 1) Australia 
Part 2) China 
Part 3) Mexico 
Part 4) Zaire 
Step-by-step explanation:
we know that
The equation of a exponential growth function is given by

where
P(t) is the population
t is the number of years since year 2000
a is he initial value
r is the rate of change
Part 1) Australia
we have

substitute


Find the expected population in 2025,
Find the value of t
t=2005-2000=5 years
substitute the value of t in the equation

Part 2) China
we have

substitute


Find the expected population in 2025,
Find the value of t
t=2005-2000=5 years
substitute the value of t in the equation

Part 3) Mexico
we have

substitute


Find the expected population in 2025,
Find the value of t
t=2005-2000=5 years
substitute the value of t in the equation

Part 4) Zaire
we have

substitute


Find the expected population in 2025,
Find the value of t
t=2005-2000=5 years
substitute the value of t in the equation
