Question

NEED HELP FAST WILL MEDAL AND FAN!!


Given that f(x) = 2x − 5, find the value of x that makes f(x) = 15.

Answer 1

@YoungStudier

Answer 2

Choices are

5

10

20

25

Answer 3

2 x ___ - 5 = 15

Answer 4

It is either b or d

Answer 5

Think about it.

Answer 6

2(5)= ??

Answer 7

yeah I know that but do you go like this
f(15)=2x-5 which equals 10 or
fx=2*15-5=25

Answer 8

which equation

Answer 9

I would just solve in your head. You said the choices you think are correct is b and d so for B

2(10)-5=?

Answer 10

15

Answer 11

Mhmmmm c:

Answer 12

but i already know it is 15

Answer 13

I just dont know which equation to do because they both lead to right answers

Answer 14

The "x" in f(x) just means what number is filled in for the x in the equation.

Answer 15

ok so the 2nd one and the answer is 25

Answer 16

it would be B as
2 x 10 = 20
20 - 5 = 15

Answer 17

Let me check and make sure I am correct as I haven't done this in a very long time.

Answer 18

ok

Answer 19

because you fill x in with 15 so 2*15 is 30 -5=25

Answer 20

You need the equation on the right of the equal sign to equal 15, So if you put 10 in for x in f(x) then you get 15.

Answer 21

ok thank you

Answer 22

No problem c: