Functions can be used to model real life situations.
The hose is 3.2 feet above the ground, at a horizontal distance of 4 fee
The function is given as:
At a horizontal distance of 4 feet, the value of x is 4
i.e. 
Substitute 4 for x in f(x).
So, we have:
Evaluate the exponent
Open both brackets
Add -4.8 and 8
Hence, the hose is 3.2 feet above the ground
Read more about functions at:
brainly.com/question/10837575
Answer:
B and D
Step-by-step explanation:
The g(x) = 725 makes no sense to me....
however g(x) = -2x/(x-3) can be solved by plugging x = value into function
a) g(x) = -2x/(x-3)
g(0) = -2(0)/(0-3) = -3
= 0/-3 = 0 ≠ -3 FALSE
b) g(x) = -2x/(x-3) = 1
g(1) = -2(1)/(1-3) = 1
= -2 / -2 = 1 equals 1 TRUE
c) g(x) = -2x/(x-3)
g(2) = -2(2)/(2-3) < g(4) = -2(4)/(4-3)
= -4 / -1 < -8 / 1
= 4 is greater than - 8 FALSE
d) g(x) = -2x/(x-3) both values were already calcuated
g(1) = -2(1)/(1-3) = 1 < g(2) = -2(2)/(2-3) = 4
1 < 4 TRUE
2x + 5y = -8 . . . (1)
-133x - 4y = -8 . . . (2)
(1) * 4 => 8x + 20y = -32 . . . (3)
(2) * -5 => -665x + 20y = 32 . . . (4)
(3) - (4) => 673x = 0
x = 0
From (1), 2(0) + 5y = -8
5y = -8
y = -8/5
- Error (e) = 50 - 42 = 8 feet
- assumed value (a) = 42 feet
_____________________________
Answer:
C y=1/2cos(x)-2
I'm not sure if it is right
My head hurts so its hard for me to concentrate
