Answer:
Uncle's earnings is $2400
Step-by-step explanation:
Represent his uncle's earnings with x
$600 less than twice what your uncle earns is represented as:
![2x - 600](https://tex.z-dn.net/?f=2x%20-%20600)
Since, his aunt's earnings is $4200.
We have:
![2x - 600 = 4200](https://tex.z-dn.net/?f=2x%20-%20600%20%3D%204200)
Add 600 to both sides
![2x - 600 + 600= 4200 + 600](https://tex.z-dn.net/?f=2x%20-%20600%20%2B%20600%3D%204200%20%2B%20600)
![2x = 4800](https://tex.z-dn.net/?f=2x%20%3D%204800)
Solve for x
![x = 4800/2](https://tex.z-dn.net/?f=x%20%3D%204800%2F2)
![x = 2400](https://tex.z-dn.net/?f=x%20%3D%202400)
<em>Hence, His uncle's earnings is $2400</em>
Oh yeah, nice and simple. Alright, so we have (f*g)(-4). What this means if that they want you to multiple f(x) by g(x), then plug in -4. Lets go do that
(3x+5)(-4x+7)
-12x^2+21x-20x+35
-12x^2+x+35
So, that is what (f*g)(x) is. Now, lets plug in -4
-12(-4)^2+(-4)+35
-12(16)-4+35
-192-4+35
-161
So, your answer would be -161
THIS IS THE EASY WAY!
So, the easy way is to plug in -4 into both f(x) and g(x), them ultiple the solution of each by each other. So,
f(-4)=3(-4)+5 g(-4)=-4(-4)+7
f(-4)=-12+5 g(-4)=16+7
f(-4)=-7 g(-4)=23
When you multiple -7 * 23, you would get the same answer: -161
Answer:
Step-by-step explanation:
hope this video link be helpfull to you
I don’t know sorry but I’m not gonna put something random so you get it wrong
Answer: 47
Step-by-step explanation:Find the absolute value of both which would be |8|+|-39|
Then you add 8 and 39 together which would be 47