Tiffany deposited two checks into her bank account this month. One check was for $50, and the second check was for $22.
Her balance at the end of the month was $306, and she made no withdrawals.
Which expression shows Tiffany's balance at the beginning of the month?

so we know the tiffany added 50 and 22 in her account and  we know her balance is 306 so to find out how much she earned we have to calculate how much she earned in this case

balance

306-22

306

- 22

 284

-   50

   2 3 4

so 234 is our answer and we can check our and by seeing if it calculates to

306

234

+ 50

2 8 4

   +2 2

   306

the answer would be c:   ax + b = ax + c

step-by-step explanation:

answer: the answer is one

step-by-step explanation:

pemdas, in this situation there is no parenthesis or exponents so you go to multiplication, 1x1=1, then division 1/1= 1 then addition 1+1=2 then subtraction 2-1=1