Make y the subject of the formula: x = (y + z)/(y – z)

JAMB Mathematics 2024 90 views

Make y the subject of the formula: x = (y + z)/(y – z)

  1. y = (z – xz)/(x – 1)
  2. y = (z + x)/(x – 1)
  3. y = (z + xz)/(x – 1) ✓
  4. y = (z + xz)/(x + 1)

Explanation

Drug abuse is using substances in ways harmful to health. Categories: stimulants (cocaine, amphetamines – increase alertness), depressants (alcohol, barbiturates – slow brain function), hallucinogens (LSD – alter perception), narcotics (heroin – pain relief, euphoria).

Effects: physical (organ damage, overdose death), psychological (addiction, mental illness), social (broken relationships, crime, unemployment). Tolerance develops (need more for same effect). Withdrawal is painful.

Prevention: education, avoiding peer pressure, treating underlying problems (stress, trauma). Treatment: rehabilitation programs, counseling, medication-assisted treatment. Recovery is possible but difficult without support.

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