Answer:
Step-by-step explanation:
f(x) = x + 1, find f(x+3)
f(x+3) = x + 3 + 1 = x + 4
This is a lowest common multiple question.
to find the lowest common multiple, you need to find the prime factors of the two numbers:
![8 = 2 , 2 , 2](https://tex.z-dn.net/?f=8%20%3D%202%20%2C%202%20%2C%202)
![12 = 2 , 2 , 3](https://tex.z-dn.net/?f=12%20%3D%202%20%2C%202%20%2C%203)
Take out duplicates:
![2,2,2,3](https://tex.z-dn.net/?f=2%2C2%2C2%2C3)
and multiply them together:
![2*2*2*3 = 24](https://tex.z-dn.net/?f=2%2A2%2A2%2A3%20%3D%2024)
and that is your answer.
Easy peasy.
Answer:
3.2
Step-by-step explanation:
4 is in the hundredths place. It is less than 5 so you leave the tenths place alone, so you get 3.2.
Answer:
A is the one with variables.
Answer:
1) x≥6
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2) h > 20
Mark worked more than 20 hours.
Step-by-step explanation:
1) -20x+18≥-102
-20x≥-102-18
-20x≥-120
Dividing -20 both side
≥![\frac{-120}{-20}](https://tex.z-dn.net/?f=%5Cfrac%7B-120%7D%7B-20%7D)
x≥6
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2) 14h + 25 > 305
14h > 305-25
14h > 280
Dividing 14 both side
![\frac{14}{14}h > \frac{280}{14}](https://tex.z-dn.net/?f=%5Cfrac%7B14%7D%7B14%7Dh%20%3E%20%5Cfrac%7B280%7D%7B14%7D)
h > 20
Mark worked more than 20 hours.