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rjkz [21]
2 years ago
13

F(x)=9x+5, find f^-1(x).

Mathematics
1 answer:
lidiya [134]2 years ago
4 0

Answer:

interchange the role of x and y

x=9y+5

x-5=9y

<u>x-5</u><u> </u>=y

9

so,f^-1(x)= <u>x-5</u>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>9

hope it helps.

<h3>stay safe healthy and happy.</h3>
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Step-by-step explanation:

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Here, b represents one loaf of bread and m represents the one gallon of milk.

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It is also given that the next week, Sarah bought 2 loaves of bread and 3 gallons of milk for $13.50.

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Then; system of equation :

4b+m = 12                   .....[1]

2b+3m = 13.50           .....[2]

Solve for b and m using above system of equations.

Multiply equation [2] by 2 we get;

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Subtract equation [1] from [3] we get;

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Therefore, cost of one loaf of bread (b) and one gallon of milk (m) are:

$2.25 ad $3



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