Question

Check my answers?
http://prntscr.com/9v2wbc
http://prntscr.com/9v2xc3

Answer 1

@countrygirl1431

Answer 2

not quite, lets start from the beginning

if f(x) = x - 4, then what is f(5)?

Answer 3

would it be f(5)=x-4

Answer 4

well, yes, but what does x - 4 equal if x is 5?

Answer 5

it equals 1

Answer 6

good.

now what is g(6) if g(x) = 3x + 6?

Answer 7

g(6) = 3(6) + 6

Answer 8

and that equals..?

Answer 9

24

Answer 10

oh crap, meant to ask for g(1), not g(6)

if g(x) = 3x + 6, what is g(1)?

Answer 11

g(1) = 3(1) + 6 = 9

Answer 12

good.


now we add f(5) + g(1) to get 1 + 9 = 10

ready to keep going?

Answer 13

yes

Answer 14

good.

so if f(x) = x - 4, what is f(6)?

Answer 15

f(6) =6 - 4 = 2

Answer 16

good

now if g(x) = 3x + 6 what is g(-2)?

Answer 17

g(-2) = 3(-2) + 6 = 0

Answer 18

good

so the denominator is 2 - 0 = 2
and the numerator is 10, like we figured out before

so our answer is 10/2 = 5

ready for the next?

Answer 19

yes i am

Answer 20

if f(x) = 4x and g(x) = 5x^3

then to get f(x)/g(x) we just divide 4x/5x^3

know what do to with the exponents?

Answer 21

we cancel the like terms

Answer 22

you're on the right track but keep in mind that

x^3 = x*x*x

so it becomes

4*x/5*x*x*x

we cancel out one of the x's to get

4x/5x^2

is that clear?

Answer 23

yes but dont we also cancle the x next to the four?

Answer 24

right

Answer 25

should be 4/5x^2

Answer 26

i cant tell if the next one is supposed to be

f(x) times g(x)
or

f(g(x))

Answer 27

if it's f(x) times g(x) then it's right, but if it's f(g(x)) then we need to redo it

Answer 28

no its times

Answer 29

ok then i think the rest of your answers are good

Answer 30

ok ty so much if i need anymore answers checked may i tag you?