Answer:
actually my bad its 11
Step-by-step explanation:
Let the first brother = x
second brother = x + 2
third brother = x + 4
<span>The product of the first and third boys' ages is 20 more than twice the second boy's age:
x(x+4) = 2(x+2) + 20
x</span>² + 4x = 2x + 4 + 20
x² + 4x - 2x - 24 = 0
x² + 2x - 24 = 0
(x - 4)(x + 6) = 0
x = 4 or -6 (rejected, age cannot be negative)
First brother = 4
Second brother = 4 + 2 = 6
Third brother = 4 + 4 = 8
The three boys are 4, 6, and 8 years old.
There is a rule:
One input(x-value) can only have one output(y-value) in order to be a function.
If one input has more than one output, it is not a function.
(This doesn't apply to outputs, one output can have more than one input and still be a function)
(2,10),(4,15),(6,20),(8,25)
This is a function because each input only has one output.
Your answer is A
2g 1b because there's 2 girls and 1 boy
Answer:
{-2, 0, 4}
Step-by-step explanation:
Domain is defined as all the inputs possible to a function.
On a graph, you may know this as the value of x.
This means the domain is equal to all values of x that produce an output.
The only values of x that have a point on them is x = 4, x = 0, and x = -2, all of which have points on the x-value.
