What is the following sign ??? and the rest of the question I'm sure I can help please provide more info
The function we have to use in this case is

where mo is the initial amount of money. After 2 teats we get that

SO he earned 755 approximately
Answer: C
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given,
Vertex (h, k ) = (1,0)
Now,
We know,
f(x) = a(x-h)²+k
Since, it passess through (2, −17)
Put x = 2 and y = - 17
or, -17 = a(2 - 1)² + 0
or, -17 = a
Now,
f(x) = a(x - h)² + k
= -17(x - 1)² + 0
= -17x² + 34x - 17