Explanation: 15% of 200 = 0.15 × 200 = 30.
Explanation: x = 12 - 5 = 7.
Explanation: Area = length × width = 8 × 5 = 40.
Explanation: 6x + 12 - 6x = 12. Wait, that\'s 12, not 0. Let me recalculate: 3(2x+4) = 6x+12, minus 6x = 12.
Explanation: 2³ = 8, 3² = 9, so 8 + 9 = 17.
A 100 km
B 120 km
C 140 km
D 160 km
Explanation: Distance = speed × time = 60 × 2 = 120 km.
Explanation: Average = (10+20+30+40)/4 = 100/4 = 25.
Explanation: 2x = 10, so x = 5.
Explanation: 25% of 80 = 0.25 × 80 = 20.
Explanation: Perimeter = 4 × side = 4 × 6 = 24.
Explanation: x = 18/3 = 6.
Explanation: 10% of 150 = 0.10 × 150 = 15.
Explanation: Area = ½ × base × height = ½ × 10 × 6 = 30.
A 2x + 10
B 2x + 8
C 8x + 10
D 2x - 10
Explanation: 5x + 10 - 3x = 2x + 10.
Explanation: Discount = 20% of $40 = $8. Sale price = $40 - $8 = $32.
A 90°
B 180°
C 270°
D 360°
Explanation: The sum of angles in a triangle is always 180°.
Explanation: y = 2(4) + 3 = 8 + 3 = 11.
A 0.35
B 0.50
C 0.75
D 0.80
Explanation: 3/4 = 0.75.
Explanation: Volume = side³ = 3³ = 27.