This expression can't be solved because we don't know the value of e. Basically what this means is that e, an unknown number, is first being multiplied by 9, and it is then added by 10. You will just leave it as it is.
You need to know these two formulas:

For example,

Answer:
lleva 10 000 tornillos un contenedor
Step-by-step explanation:
Answer:
The new cost is $108.98
Step-by-step explanation:
Mark up is the amount that is added to cost price of a product for profit.
Given
Cost price of boots = C = $99.99
Mark up = 9%
First of all we will calculate markup and then add it to the cost price of boots to find the new cost.

The new cost will be:

The new cost is $108.98