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3 years ago

8

A painter charge us $32 per hour for labor plus $50 for supplies if the total charge was $338 how many hours did you spend paini

ng

2 answers:

inessss [21]3 years ago

8 0

You spend 9 hours painting.

alisha [4.7K]3 years ago

4 0

338-50=288. 288 divided by 32 is 9. The answer is 9. :)

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What is the slope of the line that passes through the points (4, 7) and (5,8)?

slava [35]

Answer:

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Step-by-step explanation:

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8 0

3 years ago

F(x)= 5x^2+6, g(x)= 7x find (f o g)(x), find (g o f)(x), find f(g(-4)), fine g(f(5))

KiRa [710]

$(f o g)(x) = 245x^2+6\\(g o f)(x) = 5x^2+42\\ f(g(-4)) = 3926\\g(f(5)) = 917$

Step-by-step explanation:

Given

$f(x) = 5x^2+6\\g(x) = 7x$

So

$(f o g)(x) = 5(7x)^2+6\\= 5(49x^2)+6\\=245x^2+6\\(g o f)(x) = 7(5x^2+6)\\= 35x^2+42\\(fog(x))=245x^2+6f(g(-4)) = 245(-4)^2+6 \\=245(16)+6\\=3920+6\\=3926\\g(f(x)) = 35x^2+42\\g(f(5)) = 35(5)^2+42\\=35(25)+42\\=875+42\\=917$

Hence,

$(f o g)(x) = 245x^2+6\\(g o f)(x) = 5x^2+42\\ f(g(-4)) = 3926\\g(f(5)) = 917$

Keywords: functions, Function composition

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