Answer:
<h2><u><em>
-8</em></u></h2>
Step-by-step explanation:
Solve equation
-8n + 7 * (8 + 3n)= -16 + 4n
-8n + 56 + 21n = -16 + 4n
13n + 56 = -16 - 56
13n -4n = -16 - 56
9n = -72
n = -72 : 9
<u><em>n = -8</em></u>
Answer:
<u>12</u>
Step-by-step explanation:
Using Permutation Formula :
- ⁴P₂
- 4! / 2!
- 4 x 3 x 2! / 2!
- 4 x 3
- <u>12</u>
Answer:
pairs
Step-by-step explanation:
Given
Profit on selling 'x' pairs of shoes is 
Find the derivative of the function to find out the critical points

Thus, for 4 pair of shoes profit is maximize.
Answer:

Step-by-step explanation: