Answer:
c
Step-by-step explanation:
the formula is
When we plug that in we get 
Hope this helps!
Solution:
we are given that
A student has some $1 and $5 bills in his wallet.
Let there x $1 bills and y number of $5 bills.
He has a total of 14 bills that are worth $34.
So we can write


Now solve these two equations together using substitution as follows

Hence there are 9 $1 bills and 5 bills are of $5.
Answer:
Michelle, because she was only 5 off, while Jae was 8 off
(Divide) 1,300÷15=86.6666666667
0.27 cents. Just divide 3.78 by 14 to find the unit price.