What are you trying to figure out??
Answer:
<em>The domain of f is (-∞,4)</em>
Step-by-step explanation:
<u>Domain of a Function</u>
The domain of a function f is the set of all the values that the input variable can take so the function exists.
We are given the function

It's a rational function which denominator cannot be 0. In the denominator, there is a square root whose radicand cannot be negative, that is, 4-x must be positive or zero, but the previous restriction takes out 0 from the domain, thus:
4 - x > 0
Subtracting 4:
- x > -4
Multiplying by -1 and swapping the inequality sign:
x < 4
Thus the domain of f is (-∞,4)
Answer:
<u>Joel will have to pay $ 159.60 for the tablet.</u>
Step-by-step explanation:
1. Information given to us to answer the question correctly:
Discount percentage of the tablets = 20%
Original cost of the tablet = $ 190
Sales tax = 5%
2. How much will Joel pay for the tablet? Show your work in your notebook. Remember to use $.
Let's find the discounted price and the sales tax for that price, this way:
Discounted price = Original price - Discount
Discounted price = 190 - (190 * 0.2)
Discounted price = 190 - 38 = 152
Sales tax of the discounted price = 152 * 0.05
Sales tax = 7.60
Joel will have to pay = Discounted price + Sales tax
Joel will have to pay = 152 + 7.60
<u>Joel will have to pay = $ 159.60</u>
Answer:
Step-by-step explanation:
Welllllll.....
If you take the square root of 9, it's 3
if you take the square root if 16, it's 4
I would guess it to be about 3.2