What is the value of f(x)=2(0.75)^x when x=3

Asked by maham237 @ 26/12/2020 in Mathematics viewed by 304 People

What is the value of F(x)=2(0.75)^x when x equals 3?
A.4.5

B.3.375

C.1.5

D.0.8444

What type of situation could be represented by the function f(x)=2(0.94)^x?

A.a population declining rate 2%

B.a population growing rate at 94%

C. A population growing rate at 2%

D. A population decline rate at 6%

How is the expression log32-log8 written as a single logarithm?

A. Log 4

B. Log 8

C. Log 24

D. Log 40

What is the value of log 25

A.2

B.5

C.0.699

D.1.398

Answered by maham237 @ 26/12/2020

That is alot of qeustions
I will be puting less detail tho

first one
f(3)=2(0.75)^3=0.84375
D

2nd one
declining since it is less than 1, 100-94=6, so declining by 6%
D is answer

3rd one
rememeber that loga-logb=log(a/b)
so, log32-log8=log(32/8)=log4
A is answer

4th one
log25
evaluate using your calculator
1.39794
D

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