400,000
20,000
0
600
10
5
0.7
Using a graph tool
see the attache figure
the answer is the option B
g(x)=(x-5)²
Answer:
The initial cost of the cell phone was $364
Step-by-step explanation:
Since there was a 30% markup, 70% of the new cost is the initial cost. Multiply 520 by 0.7 on a calculator and you get 364