Increased price = $10 + $10×15% = $11.50
decreased price = $11.50 - $11.5×25% = 8.625
Answer:
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Question:
The quantities x and y are proportional.

Find the constant of proportionality (r)
Answer:

Step-by-step explanation:
Given

Required
Determine the constant of proportionality (r)
Constant of proportionality (r) is calculated as

When

Substitute these values in the given formula

Convert both fractions to improper fractions

Multiply both sides by 


Reorder


Divide the numerator and denominator by 3


Convert to mixed fraction

<em>Hence, the constant of proportionality is </em>
<em></em>
Answer:

Step-by-step explanation:
1) Collect like terms.

2) Simplify.

Answer:
The Answer should Be A
Step-by-step explanation:
Hope this helps and hope you get 100%... Also ill appercaite a brainlest