Please help- Let f(x) = 13 − |2x + 1|. Find all x for which f(x) ≤ 14.
A) [0, ∞)
B) (1, ∞)
C) (−∞, 0]
D) (−∞, ∞)

Δabc is reflected across line l to form δ alblcl, and a¯¯¯al¯¯¯¯ intersects line l at point d. which equation is not necessarily true?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

In the diagram below,abc is congruent to dec what is the value of x