Answer:
Vertex - (2,1)
minimum
Step-by-step explanation:
minimum y≥1
You need to do 120-60=60 and that means he only needs $60.
Answer:
f(x) = -(x-4)^2 + 5
Step-by-step explanation:
The function
is a quadratic function. Its graph looks like a parabola. The graph has a vertex of (4,5) and opens up downward.
Proving that
for all x:

Line the decimal first then divide 3
43/100 - 223/100
(43x100)-(23x100)/100x100
-18000/100000
(-18000/2000)/(100000/2000)
= -9/5 or -1 4/5