Answer:
x < -4 or x > 7.
Step-by-step explanation:
We first determine the critical points by solving x^2 - 3x - 28 = 0:
x^2 - 3x - 28 = 0
(x - 7)(x + 4) = 0
x = 7, - 4
so the critical points are -4 and 7.
Create a Table (pos = positive and neg = negative):
Value of x< - 4 -4 < x < 7 x > 7
---------------------|----------- |--------------------- |---------------------
x + 4 NEG POS POS
x - 7 NEG NEG POS
(x + 4)(x - 7) POS NEG POS
So the function is positive (>0) for x < -4 or x > 7.
You can also do this by drawing the graph of the function.
Answer:
D. passive
Step-by-step explanation:
the ratio would be as follows
40:16
or
5:2
Worded there are five kids who choose to swim to every 2 kids that choose art.
this could also be written as a fraction 40/16 = 5/2
Answer:
A , B, and D
Step-by-step explanation:
you find the unit prices by dividing the cost per pound
a bc it sells them at $1.52 per pound
b bc it sells them at $1.49 per pound
NOT c because it sells them at $3.14 per pound
D because it sells them at $1.88 per pound
