Answer:
A
Step-by-step explanation:
(f + g)(x) = f(x) + g(x)
f(x) + g(x) = 4x + 2 + x² - 6 = x² + 4x - 4 → A
Answer:
The temperature range is
, going from
to 
Step-by-step explanation:
The temperature range is the difference between the maximum and the minimum temperature:

The temperature range is
, going from
to 
Answer:
x=7
Step-by-step explanation:

Answer:
x = -5
Step-by-step explanation:
Angles "50" and "x+55" are alternate interior angles which means that they are the same.
So 50 = x + 55
That leaves you with x = -5
Answer:
a) 12.5 hours and b) 4 water pumps
Step-by-step explanation:
a) If 6 wp is filled in 15 hours, then:
5 wp is filled in X hours
X hours = (5*15)/6
X = 12.5 hours.
b) If 6 wp is filled in 15 hours, then:
Ywp is filled in 9 hours
Ywp = (9*6)/15
Ywp = 3.6 aprox 4 water pumps