Marks UP the price by 30%.
There's two ways:
30% of $22, plus $22.
OR
130% of $22.
To save time, 130% of 22.
130/100 x 22
= 13/10 x 22
=13/5 x 11
=143/5
= 28.6
$28.6
Hope this helps!
Let N be the number of items sold and p the price.
Since the variation is inverse, then the relation between N and p is:

For N=20000 and p = $9.5, we get the formula:

If p = 8.75, then the number of items sold can be computed using the formula:
5/6 x = 30
x = 30 ÷ 5/6
x = 36 <=== muffins you start with
ANSWER
A) 9.4 * 10^-8, 9.25 * 10^-6, 2.5 * 10^3, 7* 10^3
EXPLANATION
The numbers are given in standard form.
The first criteria we will use to order them is the exponents.
The bigger the exponents the bigger the number.
The second criteria is that, if the exponents of any two numbers are the same, then we use the numbers multiplying the powers of 10 to order.

The correct choice is A.