Answer:
225 sq. Ft
Step-by-step explanation:
Key words in the question;
Dilated - This means increased pr expanded
Scale factor of 3 - This basically means multiplied by 3
Old square = 75 sq. Ft
This means;
New are = Old area * 3
New area = 75 * 3 = 225 sq. Ft
x/3 + x/5 = 1 hr
8x/15 = 1 hr
x = 15/8
15/8 times 2 for round trip. 15/4 miles or 3.75 miles total
Answer:
The temperature at the start is 35F
The temperature of the room is 74F
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Step-by-step explanation:
Given
Solving (a): The temperature at the start.
To do this, we set: 
So, we have:
<em>Hence, the temperature at the start is 35F</em>
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Solving (b): The room temperature
We have:
To get the temperature of the room, we simply remove the exponential function.
So, we have:
<em>Hence, the temperature of the room is 74F</em>
The line passes through the origin and if it has a constant of variation of 3, so it represents a direct variation , Option A is the correct answer.
<h3>What is Direct Variation ?</h3>
When a quantity increases and the other quantity also increases , then those two quantities are said to be in direct variation.
It is asked in the question that which option depicts whether On a coordinate plane, a line goes through points (0, 0) and (1, 3) , represents a direct variation
As it is mentioned in the question that the line passes through the origin and if it has a constant of variation of 3, so it represents a direct variation.
To know more about Direct Variation
brainly.com/question/14254277
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