Well, looking at the expression, it has a -5 on the leading term, that means is not just a quadratic, but is a parabolic graph and because the coefficient of the leading term is negative, is upside-down, or opening downwards.
because it opens downwards, it looks like an arc, comes from the bottom up up up gets to a "maximum" or U-turn (vertex), then goes back down down down. So, where's the vertex anyway?

so, that's where the vertex is, and the maximum value for f(x), is the y-coordinate of course, or 9.
X = principle ( 1 + rate/compound rate) ^ years
x = 4250[1+(0.3/4)]^12
x = 4250(1+0.075)^12
x = 4250(1.075)^12
x = 4250(2.38178)
x = $10,122.23
3 1/2 is less because 1 liter in cups is 4.227
Answer:
8/15
Step-by-step explanation:
you divide 8 by 15 to get the fraction