Answer:
D = 3
Step-by-step explanation:
Since R is the midmoint of QS that means that QR and RS are equal to each other. So first you need to find x. There are many different ways to set up the equation to solve for x, but I'll show you the easiest one:
QR+QS=RT+QR
(2x-4)+(2x-4)=(8x-43)+(2x-4)
Combine like terms:
4x-8=10x-47
Isolate Variable:
4x-8=10x-47
-4x -4x
6x-47=-8
Isolate Constant:
6x-47=-8
+47 +47
6x=39
Divide:
x=6.5
Check Your Answer:
(Plug in 6.5 as x)
(4(6.5)-8)=(8(6.5)-43)+(2(6.5)-4)
18=18
The percentage Change is a increasing ( 30.26)
Answer:
f(-2) = 14
Step-by-step explanation:
f(x) = 3x^2 - x
f(-2) = 3(-2)^2 - (-2)
= 3(4) + 2
=12 + 2
= 14
