Answer:
In math, value can either refer to the result of a calculation or a variable or constant
Answer:
45
Step-by-step explanation:
We know that 5 lbs of apples cost $2.99
To know how much do 3 lbs of apple cost, you can use cross multiplication
If 5 lbs cost $2.99
Then 3 lbs cost $x
The proportion between the price and the number of apples is the same, you have to calculate it as:

3 lbs of apples cost $1.79
The unit price is tantamount to saying the price of each. For this item, we are asked to determine the price of each can. Thus, it can be determined by dividing the price to number of cans.
$5.25 / 5 = 1.05
Thus, each can of tomato sauce costs $1.05.