Question

let f(x)=-5x-4 and g(x)=6x-7. find f(x)+g(x)

A. -11x+3
B. x+3
C. -11x-11
D. x-11

My answer is D, can someone check to make sure I'm correct please?

Answer 1

Yepp All good

Answer 2

Can you check another one for me?

Answer 3

yeah ok

Answer 4

2. let f(x)=3x+2 and g(x)=6x-7. find f(x)-g(x)
A. 3x-9
B. -3x+9
C. -3x-5
D. 2x-1

My answer is C.

Answer 5

Should be B

Answer 6

2 - (-7) = 9

Answer 7

Ohh, I was just about to correct myself! Do you mind checking one more for me?

Answer 8

yeah sure last one

Answer 9

3. let f(x)=-5+3 and g(x)=6x-2. find f*g and its domain
A. -30x^2+28x-6; all real numbers except x=1/3
B. -15x^2-8x-12; all real numbers except x=3/5
C. -30x^2+28x-6; all real numbers
D. -15x^2-8x-12; all real numbers

My answer is A.

Answer 10

do you mean -5x+3 = f(x) ?

Answer 11

Yes.

Answer 12

f(x) = -5x+3

Answer 13

Thats good, but the domain is X all real

Answer 14

Other than that good work! :D

Answer 15

So, it would be A?

Answer 16

Would be C

Answer 17

Ohh, okay, thank you!

Answer 18

Also... sub x = 1/3 if you wanted to check. You can get an ans

Answer 19

No problem. Happy to help

Answer 20

Thank you very much!(: