Question

Check my work please.
Evaluate the function \[f (x) =4 x 7^x\] for x= -1 and x =2 show your work
\[f(x)= x^2 +1\]
\[f (-1)=(-1)^2 +1=2\]

Answer 1

Ok

Answer 2

where's the work

Answer 3

just a minute cx

Answer 4

ok

Answer 5

did that show up right??

Answer 6

I just did what the book told me

Answer 7

Its an e book.and my tablet doesn't have screenshot

Answer 8

@Nnesha

Answer 9

i guess your question is
EVALUATE THE function when x =-1 and x =2
and question have two part
a and b
a ----> f(x) =4x7^x
b------> f(x) = x^2 + 1
for both function you have to use x =-1 and x =2
right ?

Answer 10

Its written the way I wrote it so I have no idea

Answer 11

if yes then when you substitute x =-1 into 2nd function then yes your answer is right

Answer 12

i hope thats right.. thanks c:

Answer 13

wait but u have to replace x by 2

Answer 14

both

Answer 15

O.o

Answer 16

yep so now substitute 2 into x

Answer 17

man im lost

Answer 18

i used my brothers algebra calculator and it said that its just my originial answer

Answer 19

your answer which is 2 is right

Answer 20

but question is evaluate for x= -1 and x =2 show your work
when you replaced x by -1 you got 2 which is right
now substitute 2

Answer 21

2nd part substitute 2