I believe it's C) 60 because ideally it would be 3 for every 25, 20 x 25 = 200, so then you would do 3 x 20 = 60
The answer is 54x so yeah
The domain is the set of feasible input for the function. For example, functions with denominator can't have a zero denominator, logarithm can't have zero or negative inputs, and even roots can't have negative inputs.
Visually speaking, the domain is a subset of the x axis (or possibly the whole axis), so the domain gives you an idea how "how far the function goes", horizontally.
The range is the set of all possible outputs of your function, depending on all possible inputs.
Visually speaking, the range is a subset of the y axis (or possibly the whole axis), so the range gives you an idea how "how far the function goes", vertically.
The equation for the slope intercept form is 2,3
The present age of the mother is 30 years.
<u>Step-by-step explanation</u>:
Step 1 :
At present,
- Age of Jane = x
- Age of Billy = 5x
- Age of mother = 3(5x) = 15x
Step 3 :
After 2 years,
- Age of Jane = x+2
- Age of mother = 8 times as Jane = 8(x+2)
Step 3 :
Age of mother at present + 2 years = Age of mother after 2 years
⇒ 15x + 2 = 8(x+2)
⇒ 15x + 2 = 8x + 16
⇒ 7x = 14
⇒ x = 2
Step 4 :
Substitute x=2,
Age of mother at present = 15x = 30 years.
