Parameters of functions are the independent variable(s). e.x. y = 2x /\ x is the independent <span> variable (the parameter).</span>
L = building side
W = non-building side
P = 2W + L = 42 (note only one L because the other L is the building itself)
Solve for L:
L = 42 - 2W
Area = l*w
Area = (42-2W)W = 42W - 2W2
Let area be y, so y = -2W2 +42W
Note this is a parabola pointing down because the coefficient of the W2 is negative. That makes the vertex the maximum for which we are searching.
Vertex of this parabola is at W=-b/2a, if the quadratic is aW2 + bW + c = 0
a = -2
b = 42
W = -42/(2*-2) = -42/-4 = 10.5
W = 10.5
L = 42-2(10.5) = 42-21 = 21
Area = L*W = 21 * 10.5
A = 220.5 ft2
The interest that is charged on the past six months of the investment period could be obtained by the use of the interest formula.
<h3>What is interest?</h3>
The term interest refers to the money that accrues on an investment or the money that is charged on top of a loan. The interest could be simple (charged only on the principal) or compound (charged on both the principal and the interest).
Thus, the interest that is charged on the past six months of the investment period could be obtained by the use of the interest formula.
Learn more about interest:brainly.com/question/13324776
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Answer:
Step-by-step explanation:
Given
Required
The polynomial function
If a function has a, b and c as its zeros, the function is:
So, we have:
Open the inner brackets
Expand the difference of two squares
Expand
