Answer:
0 ≤ x ≤ 10
Step-by-step explanation:
The function representing the spread of virus is:
Where x represents the number of hours after 1:00 pm
So, at 1:00 pm "x" will be equal to 0. So the domain will start from x = 0
According to the given statement, the virus spreads from 1:00 pm to 11:00 pm. So, the number of hours starting from 1:00 pm and ending on 11:00 pm will be the Domain. 11:00 pm means 10 hours after 1:00 pm i.e. x = 10
So, the domains starts at x = 0 and ends at x = 10. Therefore, the correct answer is 0 ≤ x ≤ 10
<h2>
Answer:</h2>
Correct option: B
<h2>
Step-by-step explanation:</h2>
When we say a is no more than b, we express this in a mathematical language as follows:
In this inequality, we know that the area of the triangle is no more than 168 in². In other words, if the area is named 
, then:
We also know that the height of a triangle is 4 inches greater than twice its base. Translating this in a mathematical language:
From geometry, we know that the area of a triangle is given by:
Matching (1), (2) and (3):
Since the length of the base of the triangle is 
, then 
Finally, correct option is B.
Answer:
-32
Step-by-step explanation:
-4 + f(8) + 3 x g(-7) = ?
To find f(8), look at each of the f(x) function and find x = 8. The y value is the answer you will plug in for f(8). The same goes for g(-7), but you will be looking at the g(x) function at x = -7.
f(8) = -4
g(-7) = -8
Make sure you solve in the correct order using PEMDAS.
-4 + (-4) + 3 x (-8) = -32
