Which of these statements is true for f(x)=(1/2)^x ? a. it is always increasing. b. the domain of f(x) is x > 0. c. the y-intercept is (0, 1). d. the range of f(x) is y> 1/2 .

C

Step-by-step explanation:

We are given that a function

It can be write as

Taking log on both sides

Differentiate w.r.t x

for all x

When f'(x) <0 then function is decreasing.

Hence, given function is decreasing function.

Substitute x=0 then we get

Because ()

Therefore, y intercept is (0,1).

Domain pf function f(x)=R

Range of given function :()

Hence, option C is true.

your answer is 23/2 - 13.5

step-by-step explanation:

7/2 evaluates to

multiply x and 4.5

multiply x and 1

the x just gets copied along.

the answer is x

x

4.5*x evaluates to 4.5x

multiply 3 and 4.5x

multiply 1 and x

the x just gets copied along.

x

4.5*x*3 evaluates to 13.5x

7/2-4.5*x*3 evaluates to

  + 8 =

the answer is

7/2-4.5*x*3+8 evaluates to

the answer is d

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