Solve $$25 + 4 x = 45 + 8 x$$ A) X = 5
B) X = -12
C) X

question 2

Multiple Choice

Solve. $$25 + 4 x = 45 + 8 x$$

• A) x = 5
• B) x = -12
• C) x = 21
• D) x = -21
• E) x = -5

---

Definitions:

Curare

A poison used on arrows or darts for hunting, derived from plant extracts, which causes paralysis by blocking nerve impulses to muscles.

Actin Myofilament

Thin filaments within muscle cells that, along with myosin filaments, contribute to muscle contraction and movement.

Myosin Myofilament

Thick myofilament of muscle fibrils; composed of myosin molecules.

Sarcomere

The basic unit of striated muscle tissue responsible for muscle contraction, delimited by Z discs.