Answer : option A
To find the range of scores that represents the middle 50 % of the student who took the test , we find inter quartile
Inter quartile range is the middle 50% of the given range of scores.
The difference between the upper quartile and lower quartile is the inter quartile that is middle 50%
From the diagram , we can see that
Upper quartile = 89
lower quartile = 65
So range is 65% to 89%
Answer:
The exponential Function is 
.
Farmer will have 200 sheep after <u>15 years</u>.
Step-by-step explanation:
Given:
Number of sheep bought = 20
Annual Rate of increase in sheep = 60%
We need to find that after how many years the farmer will have 200 sheep.
Let the number of years be 'h'
First we will find the Number of sheep increase in 1 year.
Number of sheep increase in 1 year is equal to Annual Rate of increase in sheep multiplied by Number of sheep bought and then divide by 100.
framing in equation form we get;
Number of sheep increase in 1 year = 
Now we know that the number of years farmer will have 200 sheep can be calculated by Number of sheep bought plus Number of sheep increase in 1 year multiplied by number of years is equal to 200.
Framing in equation form we get;
The exponential Function is .
Subtracting both side by 20 using subtraction property we get;
Now Dividing both side by 12 using Division property we get;
Hence Farmer will have 200 sheep after <u>15 years</u>.
The cost of the sheets is less for the second example, the second example is the better deal.
Consider the first example:
Here, A brand of sheets is on sale for “Buy one get one at 50% off”. If each sheet costs $18.00.
So, the value of the first sheet will be $18,
And since the other sheet is at 50% off .
That is it will be half of the original value
= 50/100 * 18
=9
Therefore, the cost of two sheets
=$18 + $9
= $27.
So, Six sheets will cost
=$27+$27+$27
= $81
Cost of six sheets will be $81
Now, consider the second example
In the second example sheets are 30% off.
So, 30% of 18
= $6.
Subtract that value from 18 and you will get $12.
So, cost of one sheet = $12.
cost of 6 sheet
= $12×6
= $72
In the first example, Six sheets costs $81, while in the second example six sheets cost $72.
Since the cost is less for the second example. So, the second example is the better deal.
