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firdausmohammed80
09.02.2021 •
Mathematics
EASY WORK!! And yes it’s easy but only for other people not me :3look at the photo thx
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Ответ:
number 3 and 4 you should answer on that axis
number 5 = 12
6.4 + 10 = 14
7.9+2 = 11
8.13 - 5 = 8
9.16 - 2 = 14
10.15 + 7 = 22
Ответ:
22
Step-by-step explanation:
Ответ:
Question:
Raul works at a movie theatre. The function f(x) represents the amount of money Raul earns per ticket, where x is the number of tickets he sells. The function g(x) represents the number of tickets Raul sells per hour, where x is the number of hours he works. Show all work to find f(g(x)), and explain what f(g(x)) represents.
f(x) = 2x2 + 16
g of x equals the square root of the quantity 5 x cubed
f(g(x))=
Step-by-step explanation:
Given:
f(x) =![2x^2 + 16](/tpl/images/0452/7110/8231c.png)
g(x) =![\sqrt{(5x^3)}](/tpl/images/0452/7110/0aec6.png)
f(x) represents the amount of money Raul earns per ticket
x is the number of tickets he sells
g(x) represents the number of tickets Raul sells per hour
To find:
f(g(x)) = ?
Solution:
f(g(x)) represent the amount Raul earns by selling tickets for x hours
We know,
f(x) =![2x^2 + 16](/tpl/images/0452/7110/8231c.png)
f(g(x)) =![2(\sqrt{(5x^3)} )^2 +16](/tpl/images/0452/7110/e19e4.png)
The square root and power 2 cancel each other
f(g(x)) =![2(5x^3 ) +16](/tpl/images/0452/7110/3fc1a.png)
f(g(x)) =![10x^3 +16](/tpl/images/0452/7110/234f2.png)
So at x hours
Raul earns![10x^3 +16](/tpl/images/0452/7110/234f2.png)
For example lets assume Raul works for 5 hours, then the amount he earns will be
f(g(x)) =![10(5)^3 +16](/tpl/images/0452/7110/9bd32.png)
f(g(x)) = 10(125) +16
f(g(x)) = 1250 +16
f(g(x)) = 1266
You can also find the amount Raul earns by
g(x) =![\sqrt{(5(5)^3)}](/tpl/images/0452/7110/ae169.png)
g(x) =![\sqrt{625}](/tpl/images/0452/7110/6cb61.png)
g(x) = 25
Substituting in f(x)
f(g(x)) = f(25)
f(25) =![2(25)^2 + 16](/tpl/images/0452/7110/a01c8.png)
f(25) = 2(625) +16
f(25) = 1250 + 16
f(25) = 1266
so Raul will be earning 1266 if he sells tickets for 5 hours