For the function f(x) = -(x + 1)2 + 4, find the following components of the function and its graph: (be sure to write everything in its proper format interval notation-use infty as needed, point form, or equation)
a) Open
max/min value at
b) Vertex
Axis of symmetry
c) X-intercept(s)
d) y-intercept
e) Domain
1) Range
9) Interval of increase
and interval of decrease

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

853.3

step-by-step explanation: