2 years ago

Please help me if you can thank you.

Mathematics

1 answer:

Natasha2012 [34]2 years ago

8 0

Answer:

-3 </= x < 2

negative 3 is less than or equal to x which is less than 2

Step-by-step explanation:

The top graph shows x is less than 2. The circle is open, so the solution excludes the number 2. (If it was solid, it would be less than or equal to 2)

The second graph shows x is greater than or equal to 3. (the circle is filled in)

So if x is greater than or equal to 3, then 3 is less than or equal to x

Please let me know if you have questions about this.

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Please help me with this

MissTica

Answer:

For the question on the right, I assume b is the exponential factor, or growth factor.

Step-by-step explanation:

Linear:

$Y=aX + b\\(X, Y) = (0, 15) => b = 15\\(X,Y) = (1, 12) => a = -3\\Y = -3X + 15$

You can find the equation by using two points and the equation for a line.

Exponential:

$Y = a^{bX+c}\\(X, Y) = (0, 81) => a^{c} = 81 => a^{c} = 3^{4} => a=3, c=4\\(X, Y) = (1, 27) => a^{b+c} = 27 => a^{b}a^{c} = 27 => a^{b} = \frac{27}{81} = \frac{1}{3} => b=-1\\Y = 3^{-X+4}$