Yes 1 is a rational number, because it can be expressed as the quotient of two integers
$25 because she wants $50 a day and she wants to sell to 2 customers each day so divide $50 by 2 and you will get $25 .
Try multiplying if it doesn't work divide
4,800 and 60 looks to be what you're looking for.
Deuces!
The veretx is normally the minimum value
hack:
for f(x)=ax²+bx+c
the x value of the vertex is -b/2a
so
f(x)=1x²-16x+71
x value is -(-16)/(2*1)=16/2=8
find f(8) to find y value of vertex
f(8)=8²-16(8)+71
f(8)=64-128+71
f(8)=7
the vertex is (8,7)
the minimum value is 7
