Answer:
Not the solution tp the system because the ordered pair should be true for both equations. However the last equation is not true.
Step-by-step explanation:
(-1,-2) is the solution of the system. x + y =-3 and 2x - y = -4*
<em />
<em>x + y =-3 :</em>
(-1)+ (-2) = -3
-1-2 =-2 -3=-3
<em />
<em>2x - y = -4:</em>
2(-1)-(-2)=-4
(-2) -(-2)= -4
0=-4
It’s B) (2,-4), (2,-2), (4, -2)
Answer:
Step-by-step explanation:
Initial value is $400
Value after 9 years is zero
Change in value over 9 years is $400
<u>Rate of change is:</u>
We set up a proportion: 14/?= 1/5
Cross multiply: 1*?= 14*5
⇒ ?= 14*5/1= 70
1/5 of 70 is 14.
