<u>Answer:</u>
The correct answer option is D. 
<u>Step-by-step-explanation:</u>
We are given the following two functions:
and
We are to find 
so we will subtract the function g from function f, arrange the like terms together and combine them like shown below to get:
Therefore, is equal to so the correct answer option is D. .
Answer:
(6, - 3 )
Step-by-step explanation:
Given the 2 equations
2x + 5y = - 3 → (1)
2x + 2y = 6 → (2)
Subtracting (1) from (2) term by term will eliminate the x- term
(2x - 2x) + (2y - 5y) = 6 - (- 3), that is
- 3y = 9 ( divide both sides by - 3 )
y = - 3
Substitute y = - 3 in either of the 2 equations and solve for x
Substituting y = - 3 in (1)
2x + 5(- 3) = - 3
2x - 15 = - 3 ( add 15 to both sides )
2x = 12 ( divide both sides by 2 )
x = 6
Solution is (6, - 3 )
$1170
Given: 6kg rice costs $540
Find: cost of 13kg rice
13 kg rice x ($540 / 6 kg rice)
Units kg rice crosses out and you’re left with $ for units.
(13 x 540) / 6 = $1170
CHECK
13kg rice /6 kg rice = 2.17 bags to make 13kg rice
2.17 bags of 6 kg rice = $1170
So the answer is correct.
