Answer:
Val is going to plant 3c + 9 seeds.
Step-by-step explanation:
Add: 2c + 9 + c = 3c + 9. Val is going to plant 3c + 9 seeds.
B) 38.4
432
Volume of cuboid:
12 x 4.5 x 5.5 = 297
volume of traingular prism:
(12x5)/2 x 4.5 =135
add them together:
135+297 =432
hope this helps!