Solving Linear Equations III — Solutions

1. Solving Equations

   1. x = 7 ▶ View Solution
   2. x = 8 ▶ View Solution
   3. m = 3 ▶ View Solution

2. Equations with Brackets

   1. x = 6 ▶ View Solution
   2. x = 12 ▶ View Solution

3. The Pancake Recipe

   1. 4 cups of milk: 14 pancakes ▶ View Solution
   2. x = 7 cups of milk ▶ View Solution

4. Hexagonal Tables

   1. Table values: x = 1: 6 people   x = 2: 10 people   x = 3: 14 people ▶ View Solution
   2. Verify rule y = 4x + 2: Rule is correct ✓ ▶ View Solution
   3. 10 tables: 42 people ▶ View Solution
   4. x = 6 tables ▶ View Solution

5. The Electrician

   1. C = 60h + 80 ▶ View Solution
   2. 2-hour job: $200 ▶ View Solution
   3. h = 4 hours ▶ View Solution

6. Tree Planting

   1. 5 rows: 44 trees ▶ View Solution
   2. r = 7 rows ▶ View Solution

7. Savings Account

   1. Week 3 balance: $125 ▶ View Solution
   2. y = 25x + 50 ▶ View Solution
   3. x = 10 weeks ▶ View Solution

8. Car Rental

   1. C = 40d + 100 ▶ View Solution
   2. 7-day rental: $380 ▶ View Solution
   3. d = 10 days ▶ View Solution

9. Water Tank

   1. After 5 minutes: 150 litres ▶ View Solution
   2. x = 12 minutes ▶ View Solution
   3. x = 20 minutes ▶ View Solution

10. Mobile Phone Data

    1. y = 10x + 20 ▶ View Solution
    2. 4 GB used: $60 ▶ View Solution
    3. x = 7 GB ▶ View Solution