I think you need only an answer without expanation so let's start.
a)

b)
Answer: its the last choice
Step-by-step explanation:
Answer:
the answer is c
Step-by-step explanation:
hope i helped
Answer:
the answer is below
Step-by-step explanation:
multiply like this
<h2>L×b×h</h2>
Answer:
The number is 8.
Step-by-step explanation:
Write an equation then solve by isolating the variable.
let x be the number
4x + 15 = 47 Subtract 15 from both sides
4x = 47 - 15
4x = 32 Divide both sides by 4
x = 32/4
x = 8
Therefore the number is 8.