Answer:
15
Step-by-step explanation:
Coefficient means the number in front of the variable (like r) or term (a letter).
In your expression 3-15r, 15 is the coefficient.
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Answer:
Option A - 
Step-by-step explanation:
Given : Aricela is trying to estimate the distance between her house and the park. On a map with a scale of 0.5 in. = 2 miles, the distance between her house and the park is 2.75 in.
To find : Which proportion can Aricela use to determine the distance, d, between her house and the park?
Solution :
The distance between her house and the park is 'd' miles.
A scale of 0.5 in. = 2 miles
The distance between her house and the park is 2.75 in.
i.e. the scale is 2.75 in. = d miles
The proportion form is

Therefore, proportion can Aricela use to determine is
.
So, option A is correct.
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