Answer:
7.21 is write answers brooooooooo
F(x) = -9x^2 - 7x + 8
f(5) = -9(5^2) - 7(5) + 8
f(5) = -9(25) - 35 + 8
f(5) = - 225 - 35 + 8
f(50 = - 252 <==
-9 i believe because 9x3=27
2. You would use liters for a bathtub.
3.You would use milliliters for a medicine capsule.