Answer:

Step-by-step explanation:
- One off charge = $10
- Charge for data over 2 Mb is = $0.10 per MB
<u>The monthly charge for x MB data is:</u>
1 . Data ta used up to 2 Mb
2 . Data used more than 2 Mb
- m(x) = 10 + 0.1(x - 2) = 10 + 0.1x - 0.2 = 0.1x + 9.8
- m(x) = 0.1x + 9.8
So the function is:
I think that you typed wrongly. That has to be f(x)= -2x+8
If f(x)= -2x+8, we can solve that problem.
We replace x= -1.8 in that expression, that means: f(-1.8)= -2x(-1.8)+8= 3.6+8=11.6
But if the formula of f(x)=-2+8, that means f(x) has a stable value and that value is -2+8=6.
So for all x we always have f(x)=f(-1.8)=6
Answer: 21 kilometers
Step-by-step explanation:
Because 13 plus 8 is equal to 21.
2x^2 - 32
2(x^2 - 16)
2(x + 4)(x - 4) <==