
a.
To find:An equation to represent the amount of hay needed to sustain
a.

Answer to Problem 13STP
Amount of hay required
Explanation of Solution
Given information:
A horse requires
Given
A horse requires
For each horse
Multiplying with
We get
We got
For each horse for
It means
For
Multiplying with
We get
Therefore,
For
Amount of hay required
b.
To find:Is your equation a direct, joint, or inverse variation.
b.

Answer to Problem 13STP
It is a Joint Variation.
Explanation of Solution
Given information:
A horse requires
We got
For
Amount of hay required
It is a Joint variation because here amount of hay required varies jointly with number of horses and number of days.
Therefore,
It is a Joint Variation.
c.
To find:How much hay do three horses need for the month of July
c.

Answer to Problem 13STP
Amount of hay required
Explanation of Solution
Given information:
Number horses
Number of days
For
Amount of hay required
Number horses
Number of days
On substituting values
We get
Amount of hay required
Therefore,
Amount of hay required
Chapter 13 Solutions
Algebra 2
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