Write an equation: after withdrawing $7 from a checking account, carla’s balance was $89

The initial Carla's balance was $96

The equation is x-7=89

Step-by-step explanation:

Let

x > initial Carla's balance

we know that

The linear equation that represent this problem is equal to

x-7=89

solve for x

Adds 7 both sides

x=89+7

x=$96

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.