Which number line represents the solutions to x + 4 = 2? !
+
4
-7
+
7
6
+
6
5
+
5
4
+
4
3 -2 -1
+ + +
3 2 1
h
+
0 1 2
+
o 1 2
3
+
3
5
+
5
6
+
6
7
+
7
4
+
-7 -5 4 -3 -2 -1 0 1
2
t + tt
7 6 5 4 -3 -2 -1 0 1 2 3
4 5
6 7

Anyone know? will mark brainliest if you're correct!

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14