Mrs. Lopez has $9,118 in her bank account on March 1st. She saves $609 in March. Then she must pay $1,011 in taxes in April. Mrs. Lopez is able to save $705 in May. At the end of May, approximately how much greater or less is her account balance than it was on March 1st?
a. her account balance is approximately $300 greater.
b. her account balance is approximately $1,100 greater.
c. her account balance is approximately $2,300 greater.
d. her account balance is approximately $9,400.
Also, please explain how you got the answer!!!