Answer:
See below
Step-by-step explanation:
1. a) round 5.50 up to 6 and 4.25 down to 4 ⇒ 2 x 6 + 3 x 4 = 12 + 12 = 24
b) 2 x 5.50 + 3 x 4.25 = 11 + 12.75 = 23.75
c) 25 - 23.75 = 1.25
2. 2.5 x 1.4 = 3.5
3. a) area = base x height = 12 x 1.5 = (12 x 1) + (12 x 0.5) = 12 + 6 = 18
b) area = 1/2 x base x height = 1/2 x 16 x 4 = 8 x 4 = 32 in²
4. 17.52 / 4 = 4.38
