You have troubles with domains only if you have:
- Denominators
- Roots with an even degree
- Logarithms
In this case, you have neither of these three, so you can compute your function wherever you want. The domain is all real numbers.
If you have information about 5 servings, assuming that all servings have the same calories, the information about one serving is simply obtained by dividing the total by 5.
So, each serving has

calories
Answer:
Maximum heart rate can be represented into a function as follows
let
x = age
y = Maximum heart rate
equation will be
y =220-x
for example if we take a person who is 50 years old then the maximum heart rate that person will have will be
y= 220 - 50
y = 170
This means that this is the average maximum number of times your heart should beat per minute while exercising.
Step-by-step explanation:
we are to first collect like terms here I mean all numbers that look alike are to be out on the same side so we are now going to have.



now we are to divide both sides with the coefficient of x and we are to get
