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3 years ago

7) Kristin spent $306 on books. Math books cost $26 and English books cost $30. If she bought

Mathematics

2 answers:

Nadusha1986 [10]3 years ago

6 0

Answer:

362

Step-by-step explanation:

That's the right answer

otez555 [7]3 years ago

5 0

Answer: Kristin bought 6 Math books and 5 English books.

Step-by-step explanation: Let x be the number of math books and y the number of english books.

Relation: 306=26x+30y

11=x+y

Solve using elimination method so you would get that y=5 then replace y=5 in the first equation to find x which is 6

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Which of the following rational functions is graphed below?

vampirchik [111]

Answer:

The correct option is D.

i.e.

$f\left(x\right)=\frac{1}{x\left(x+4\right)}$ is the correct option.

The correct graph is shown in attached figure.

Step-by-step explanation:

Considering the function

$f\left(x\right)=\frac{1}{x\left(x+4\right)}$

$\mathrm{Domain\:of\:}\:\frac{1}{x\left(x+4\right)}\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:x$

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$\mathrm{Axis\:interception\:points\:of}\:\frac{1}{x\left(x+4\right)}:\quad \mathrm{None}$

$\mathrm{Extreme\:Points\:of}\:\frac{1}{x\left(x+4\right)}:\quad \mathrm{Maximum}\left(-2,\:-\frac{1}{4}\right)$

So, the correct graph is shown in attached figure.

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