OpenStudy (anonymous):

HELP! http://prntscr.com/8ftwgn http://prntscr.com/8ftyyr http://prntscr.com/8ftz2a http://prntscr.com/8ftz6d

2 years ago
OpenStudy (butterflydreamer):

For your first question, they've already given you the value of f(x) and g(x) so all you want to do is plug it into the equation. :) \[f(x) = 9x + 4 \] \[ g(x) = -5x + 1\] Therefore g(x) - f(x) would equal: \[-5x + 1 - ( 9x + 4) = ? \]

2 years ago
OpenStudy (anonymous):

=-14x-3

2 years ago
OpenStudy (butterflydreamer):

correct :)

2 years ago
OpenStudy (anonymous):

:]

2 years ago
OpenStudy (butterflydreamer):

For the next question: f (x) = 9x - 5 f (2) = 9(2) - 5 = ? Then after you find out what f(2) equals to, we want to find what g(4) equals to. So, g (x) = 6x g (4) = 6(4) = ? Then f(2) - g(4) = ?

2 years ago
OpenStudy (anonymous):

they are easy just try to simply solve it

2 years ago
OpenStudy (anonymous):

11?

2 years ago
OpenStudy (butterflydreamer):

not quiteeee. So what did you get for f(2) = ?

2 years ago
OpenStudy (butterflydreamer):

Note: f(2) = 9(2) - 5 = 18 - 5 = 13 g(4) = 6(4) = 24 f(2) - g(4) = 13 - 24 = ?

2 years ago
OpenStudy (anonymous):

oh ok so it would be -11

2 years ago
OpenStudy (butterflydreamer):

yyyep :)

2 years ago
OpenStudy (butterflydreamer):

For question 3. You need to multiply both f(x) and g(x) together. Since \[f(x) = x^2 + 6x\] and \[g(x) = 2x^3\] Multiply both together and we get: \[f(x) \times g(x) = 2x^3 (x^2 + 6x) = ?\]

2 years ago
OpenStudy (anonymous):

multiply the numbers and the powers will add

2 years ago
OpenStudy (anonymous):

would is be D?

2 years ago
OpenStudy (butterflydreamer):

yyessss ^_^

2 years ago
OpenStudy (butterflydreamer):

now for the final one. Just multiply both and see which one is correct. So what do you get when you multiply f(x) and g(x) together? \[f(x) \times g(x) = 5x ( 3x - 2) = ?\]

2 years ago
OpenStudy (anonymous):

would the answer be A?

2 years ago
OpenStudy (anonymous):

B***

2 years ago
OpenStudy (anonymous):

not A

2 years ago
OpenStudy (butterflydreamer):

yes A is correct but have you checked option C or D? Remember that the question says "check all correct answer(s)" :)

2 years ago
OpenStudy (anonymous):

so A, C and D are the correct answers

2 years ago
OpenStudy (anonymous):

B*

2 years ago
OpenStudy (anonymous):

-.-

2 years ago
OpenStudy (butterflydreamer):

A is correct. C is correct. But what about D?? Note: when you multiply anything by 0, the answer will be 0

2 years ago
OpenStudy (anonymous):

so D is incorrect

2 years ago
OpenStudy (butterflydreamer):

yepp :)

2 years ago
OpenStudy (anonymous):

ty

2 years ago
OpenStudy (butterflydreamer):

no problemo~

2 years ago