This downward-opening parabola has its vertex at x = -8, so the function is decreasing on the interval (-8, ∞).
B. 32; 48 should be the answer
The max of Lauren's age --> the minimum of the others' ages, 1, 2 & 3
4*avg = 4*9 = 36
36 - (1+2+3) = 30
Lauren is 30 yrs of age, or younger.
The correct answer is choice C
Answer:

Step-by-step explanation:
1
---------> 
3
--------->
(multiply by
) -----------> 
