(x + x² + 4x) 3
3(x) + 3(x²) + 3(4x)
3x + 3x² + 12x
We want to solve the equation :

first, multiply both sides by 4:


divide both sides by 3:

add -3 to both sides:

Answer: x=9
The slope-intercept form:

m - slope
b - y-intercept
We have m = 2 and b = 3. Substitute:

D
They are the same length :)
Chris and Jim must replace a <em>total</em> quantity of 17 tyres.
<h3>What is the minimum number of tyres to be replaced?</h3>
In this problem we must use an inequality of the form f(x) ≥ a, where f(x) is the difference between the number of tyres replaced by Jim and the number of tyres replaced by Chris:
(25/20) · x - x ≥ 3
(5/20) · x ≥ 3
x ≥ 12
Then, the <em>minimum</em> number of tyres to be replaced is n = 15 + 12 = 17 tyres.
To learn more on inequalities: brainly.com/question/20383699
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