Question

Find f(-3) if f(x) = x 2.

-9
-6
6
9

Answer 1

\[f(-3)=(-3)^2=???\]

Answer 2

assuming that
\[f(x)=x^2\]

Answer 3

oh! -6?

Answer 4

\[(-3)*(-3)=(-3)^2\]
it is not -6

Answer 5

oh...9! I added haha

Answer 6

yes

Answer 7

Yay! haha, could you help me figure out this: Find x if f(x) = 2x + 7 and f(x) = -1.

Answer 8

there is no question there

Answer 9

Yes there is lol its "Find x if f(x) = 2x + 7 and f(x) = -1. "

Answer 10

oh misread

they're both equal to f(x)
so
2x+7=-1

right?

Answer 11

yes,

Answer 12

now solve for x

Answer 13

add 7 to -1, or multiply 7 to -1?

Answer 14

subtract 7 on both sides to get rid of the 7 on the left side

Answer 15

oh ok....it comes out in all to be -3. did I do that right?

Answer 16

no you did not

Answer 17

darn it!! well I subtracted and got 6

Answer 18

\[2x+7=-1\]
\[2x+7-7=-1-7\]
\[2x=-1-7\]
-1-7 does not equal 6

Answer 19

oh -8