Answer:
$1.50 per song
Step-by-step explanation:
You divide $22.50 by 15 to get the cost per song.
Answer:
7
Step-by-step explanation:
7 is a positive number and is greater than -8.
Answer:
Option B
Step-by-step explanation:
we know that
The sum of an arithmetic series is equal to
S=n(a1+an)/2
where
a1 is the first term
an is the last term
n is the number of terms
In this problem we have
n=20
a1=102
an=159
substitute the values in the formula
S=20(102+159)/2
