A)

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B)

Or

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C)

Wait sorry in fraction for it is 1000000/10
5x + 4y = 24
Substitute y for 1
5x + 4 = 24
5x =20
x = 4
Work shown above! Answer is
a = 5 b = -2 c = 0
Answer: 

Step-by-step explanation:
Given :

re - writing the equation , we have

we need to find the value of a and b for which -2<x < 4 , this means that the roots of the quadratic equation are -2<x < 4.
The formula for finding the quadratic equation when the roots are known is :
- sum of roots(x) + product of root = 0
sum of roots = -2 + 4 = 2
product of roots = -2 x 4 = -8
substituting into the formula , we have:
, which could be written in inequality form as

comparing with
, it means that :

