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
Given is-
The sundae contains over 2 kilograms of ice cream, which means S will be at least equal to 2.
Let 'S' represents the weight of sundae.
Also given is that the sundae can have any number of toppings.
Let 't' represents the toppings.
Hence, the inequality describing S, the weight of the special sundae in kilograms is given as:

Is there a missing sign? Because adding 5y to each side would make this 8 = 20 which is not possible