2.50x + 1.75y < or = to 15

y < or = 1.43x + 8.57

y = 8.57

I'm having a brain cramp and trying to find x has been a lost time tonight. Plese help what is x

The second inequality can be derived from the first one.
The third statement, y=8.57, does not follow from the second. Is it independent information that you were given?
If y=8.57, then
8.57 <or= 1.43 x + 8.57
0 <or= 1.43 x
x >or= 0

Based on the given information, we have the inequality 2.50x + 1.75y ≤ 15.

To solve for x, we need to isolate it on one side of the inequality.

First, let's simplify the inequality:

2.50x + 1.75y ≤ 15

We can subtract 1.75y from both sides:

2.50x ≤ 15 - 1.75y

Next, divide both sides of the inequality by 2.50 to isolate x:

x ≤ (15 - 1.75y) / 2.50

Now, if we have additional information that y ≤ 1.43x + 8.57, we can substitute this into the inequality:

x ≤ (15 - 1.75(1.43x + 8.57)) / 2.50

Now, let's simplify this further:

x ≤ (15 - 2.5025x - 15.0075) / 2.50

Combine like terms:

x ≤ (-2.5025x - 0.0075) / 2.50

Multiply both sides by 2.50 to eliminate the fraction:

2.50x ≤ -2.5025x - 0.0075

Add 2.5025x to both sides:

5.0025x ≤ -0.0075

Divide both sides by 5.0025 to solve for x:

x ≤ -0.0075 / 5.0025

Simplifying further:

x ≤ -0.0015

So, according to the given information and the inequality provided, x is less than or equal to -0.0015.