Answer:
Step-by-step explanation:
domain X is real number
range Y larger or equal to -3 (cause 4x^2 is always >= 0)
Lets say the number is x so we can make an equation
If is at least 21, that means it has to be greater then or equal to it.
6+5*x>=21
You can subtract 6 from both sides
5*x>=15
Then divide both sides by 5
x>=3
You can conclude that the number is greater then or equal to 3.
Answer:
D. 5/2
Step-by-step explanation:
20:8
You can divide them by 4 to get 5 and 2
20/4 = 5
8/4 = 2
5/2
Hope this helps!!
