-2(x - 3.5) = -2
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Answer:
The crossover point for Time
Step-by-step explanation:
From the question we are told that
The total rooms rented for the year is
Time's fixed cost is r = $61,000
Time's variable cost is $12.5 per room
Duffy's Maid Service fixed cost is $25,000
Duffy's Maid Service variable cost is $18.00 per room
The cross over point for Time is mathematically represented as
substituting values
Answer:
The equations are: and
.
Step-by-step explanation:
We are given that Brittany uses the rowing machine and the stair machine at the gym for an exercise program.
Let the time spend by Brittany on the stair machine be represented by the variable .
and the time spend by Brittany on the rowing machine be represented by the variable .
Now, there are two conditions stated by her trainer;
- The first condition states that Brittany will exercise for 30 minutes, dividing her time between the two types of machines, that is;
- The second condition states that Brittany will spend three times as much time on the stair machine as on the rowing machine, that is;
So, the equations are: and
.
These equations can be solved either using the substitution method or the elimination method.