4.68/12 = 0.39 per ticket
4.50/10 = 0.45 per ticket.
So, we are better off taking 12 tickets for $4.68
Hope this helps!
g(5) means we substitute every x in the equation with a 5.
g(5) = (5)^2 - 4.
g(5) = 21.
If 90 is 80% of the whole value, then 1/4 of 90 added to 90 will be the value, because 1/4 of 80% (which is 20%) added to 80% will give us 100%
So,
90/4=12.5
90 + 12.5=102.5
At least, that's my take on it
