Let f(x)=3x=5 and g(x)=-4+7 find (f*)

a)-7

b)74

c)35

d)23

i need asap pleses now.

a

Step-by-step explanation Option 1:

Plug  

4

into  

g

(

x

)

:

g

(

x

)

=

−

2

(

4

)

−

6

=

−

8

−

6

=

−

14

Then plug  

g

(

x

)

into  

f

(

x

)

:

f

(

x

)

=

3

(

−

14

)

−

7

=

−

42

−

7

=

−

49

Option 2:

Plug  

g

(

x

)

into  

f

(

x

)

:

f

(

x

)

=

3

(

−

2

x

−

6

)

−

7

=

−

6

x

−

18

−

7

=

−

6

x

−

25

Finally plug  

4

into our current  

f

(

x

)

:

f

(

x

)

=

−

6

(

4

)

−

25

=

−

24

−

25

=

−

49

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

answer is x<