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madreJ [45]
3 years ago
11

Quintin is participating in a walkathon. He writes the equation m = 8d + 6 to represent the amount of money he collects from eac

h sponsor for walking d kilometers. What number represents the rate of change? What number represents the initial value? Explain.
Mathematics
1 answer:
Lera25 [3.4K]3 years ago
8 0

Answer:

8 represents the rate of change while 6 represents the initial value

Step-by-step explanation:

For every additional kilometer d that we walks, d increases by 1 and m increases by 8 times d. So 8 represents the rate of change.

At d = 0, meaning d = 0, m = 8*0 + 6 = 6. So he gets 6 at before having to walk. So 6 represents the initial value

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The length of a rectangle is the width minus 8 units. The area of the rectangle is 9 units. What is the length, in units, of the
frez [133]

Length of rectangle is 1 unit  

<u>Solution: </u>

Given that  

Length of a rectangle is width minus 8 units.

Area of rectangle = 9 square units

Need to calculate the length of rectangle.

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Length of the rectangle = x – 8

\text{ Area of rectangle }=\text{ width of rectangle }\times \text{ Length of the rectangle }

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\begin{array}{l}{\Rightarrow x^{2}-8 x=9} \\\\ {\Rightarrow x^{2}-8 x-9=0}\end{array}

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    (a+2)(a - 3)
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How did you get that answer j
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