It can be found by using the formula,
an = a+(n-1)d
The answer is x=1
x^5=1
x=5[square]1
x=1
3/5 / 3/7
= 3/5 * 7/3
= 7/5 or 1 2/7
D(7, 3), E(8, 1), and F(4, -1)
We calculate the squared distances between the points:



Since
we have a right triangle with hypotenuse DF.
The percentage of reduction is 17%
<u>Explanation:</u>
Original price = $21
Reduced price = $17.43
Percentage of reduction = ?
Difference in price = $21 - $17.43
= $3.57
Percentage of reduction = 

Therefore, percentage of reduction is 17%