Answer:
The answer is "140".
Step-by-step explanation:
Calculating the average cost:

To minimize average cost we have to find x for wich A'(x)=0
Answer:
12 portrait sheets with total cost of $447
Step-by-step explanation:
x sheets ordered
Cameron: 33x + 51 = Lasting Memory : 29x + 99
33x + 51 = 29x + 99
33x - 29x = 99 -51
4x = 48
x = 12 sheets ordered
Total cost: 33 * 12 + 51 = 447
check: 29 * 12 + 99 = 447
Step-by-step explanation:
7x^×2-16x-15
14x^-16x-15
Answer:
no they are not equal because one equals 7.8 while the other equals 7.5
1/2 has the greatest value