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.
Assuming she set up the problem vertically, she began subtracting from the left, instead if the right.
2t^2+1
Subtract t^2 from 3t^2 you get 2t^2
which is 2t^2+1 answer
-8-5b+7+5b
add +5b to -5b to get 0.
-8+7 = -1
Answer is -1.
Answer: 25%
Step-by-step explanation: