4 years ago

If p(x) = 2x-4 and q(x)= x -3 what is (p o q)(x)

Mathematics

1 answer:

Fittoniya [83]4 years ago

6 0

You replace the x in p(x) by x - 3:-

(p o q)(x) = 2(x - 3) - 4

= 2x - 10 (answer)

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The right answer is Option A.

Step-by-step explanation:

Let,

x be the postcards

y be the large envelops

According to given statement;

14x+5y=12 Eqn 1

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Multiplying Eqn 1 by 3;

$3(14x+5y=12)\\42x+15y=36\ \ \ Eqn \ 3$

Subtracting Eqn 2 from Eqn 3;

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Dividing both sides by 32

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Putting x=0.35 in Eqn 1;

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Dividing both sides by 5

$\frac{5y}{5}=\frac{7.10}{5}\\y=1.42$

Therefore, one large envelope costs $1.42

The right answer is Option A.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

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