Kathy has $3,500.00 in her savings account. she makes $1,500.00 each month at her new job. she wants to save up $7,000.00 in this account. write an equation to represent this scenario. use m to represent the number of months.

a.
7,000 + 1,500m = 3,500

b.
7,000m ‒ 3,500 = 1,500

c.
3,500 + 1,500m = 7,000

d.
3,500 ‒ 1,500m = 7,000