3 years ago

How many terms are in the expression shown?

Mathematics

1 answer:

Svetlanka [38]3 years ago

3 0

answer: 5 terms shown in the expression shown

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A store sells packages of comic books with a poster. A poster and 2 comics cost $7.99. A poster and 11 comics cost $16.99. Wri

leva [86]

Answer:

$y=x+5.99$

Step-by-step explanation:

A poster and 2 comics cost $7.99

(2,7.99)

A poster and 11 comics cost $16.99.

(11,16.99)

Let y be the cost of package and x be the no. of comics

We will use two point slope form :

$(x_1,y_1)=(2,7.99)$

$(x_2,y_2)=(11,16.99)$

Formula : $y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

Substitute the values:

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

$y-7.99=\frac{16.99-7.99}{11-2}(x-2)$

$y-7.99=1(x-2)$

$y-7.99=x-2$

$y=x-2+7.99$

$y=x+5.99$

Hence a linear function rule that models the cost y of a package containing any number x of comic books is $y=x+5.99$

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Terry ate 1/4 of a giant cookie. Cami and Rene each ate 1/2 of what was left over l. What fraction of the cookie did Cami eat?

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Step-by-step explanation:

$a=3,\:b=-7,\:c=-1:\quad x_{1,\:2}=\frac{-\left(-7\right)\pm \sqrt{\left(-7\right)^2-4\cdot \:3\left(-1\right)}}{2\cdot \:3}$

$x=\frac{7+\sqrt{61}}{6},\:x=\frac{7-\sqrt{61}}{6}$

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Answer:

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Step-by-step explanation:

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