A) S + D = 200
B) 85 S + 110 D = 18,250 we multiply A) by -85
A) -85 S -85 D = -17,000 then we add to B) and get
25 D = 1,150
Double Bed Rooms = 46
Single Bed Rooma = 154
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Double Check
46 * 110 = 5,060 154 * 85 = 13,090
Total = 18,150
Answer:

Step-by-step explanation:
Given

Required
Find the equivalent;
To find the equivalent of the given expression, we make use of laws of indices;
Using the following law of indices;

So;
becomes

------------ This is one equivalent
Solving further;
Using the following law of indices;

So;
becomes


Hence;

Conclusively; the equivalents of
are 
100+25x=250
Subtract 100 from both sides
25x=150
X=6
6 people
Answer:
B
Step-by-step explanation:
Answer:
At a rate of 5%.
Step-by-step explanation:
This is a simple interest problem.
The simple interest formula is given by:

In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.
In this question:
Payment plan for $1500 means that 
$450 interest after 6 years means that 
We have to find the rate I. So




At a rate of 5%.