Each adult lion eats 5 pounds of meat per day
There are 8 adult lions.
So, total they eat:
8 * 5 = 40 pounds per day
Now,
the cubs eat 3 pounds of meat per day
There are 3 cubs.
So, total they eat:
3 * 3 = 9 pounds per day
Full Total amount of meat per day for all lions is:
40 + 9
= 49 pounds of meat per day
----------------------------------------------------------------------------------------------------------------
If we were to write an expression of total amount of meat neede per day, we could write:
8x + 3y
Where
x is the amount of meat adult lion eats per day and y is amount of meat cubs eat per day
We know adult lion eats 5 lb per day and cubs eat 3 lb per day,.
So, we would evaluate the expression for x = 5 and y = 3
We would get:
8x + 3y
8(5) + 3(3)
40 + 9
= 49