<span>slope formula, which states that m = (y2 -- y1) / (x2 -- x1).</span>
No
For future reference: When two triangles are congruent they will have exactly the same three sides and exactly the same three angles. The equal sides and angles may not be in the same position (if there is a turn or a flip), but they are there.
The product of 110 times n is always 10 times the product of 11 times n
Let the truck price be t. Then:
$12000 ≤ t + $84 ≤ $15000.
Subtracting $84 from both sides, we get the price range:
$11916 ≤ t ≤ $14916