Answer:
Molly paid for each song $1.5
Step-by-step explanation:
Let
x ------> amount that Molly paid for each song
we know that
The amount that Molly paid for each song multiplied by 8 is equal to the gift card value
so
The linear equation that represent this problem is

Solve for x
Divide by 8 both sides


Molly paid for each song $1.5
It is not factorable. Factors of 21 are. 21 and 1
7 and 3. None of those add up to 12
The answer would be the first one
B. 68
I use the formula A= bh/2 it’s the same thing
8x17 = 136
136/2 = 68
The unit measure that is appropriate would be Cubic meters