Last week, marcus had a balance of - $10 in his savings account. this week, the balance is $10. which equation would show the change, c, in his savings a. -10 + c =10 b. c + 10 =10 c. c + -10 =-10 d. -10 - c =-10

The correct answer is:  [A]:  " -10 + c = 10 " .

Explanation:

 
The beginning balance is:  " -$10 ". 

The "ending balance", or "current balance", is:  "$10" .

So, the beginning balance is a "negative value", or a "deficit".

To get the change, "c" , 

either:  " 10 − c = -10 " ; 

or:  " -10 + c = 10 " .


Among the answer choices given, the correct answer choice provided is:


Answer choice:  [A]:   " -10 + c = 10 " .