2 years ago

!NUMBER 4! please help!! show all work please

Mathematics

1 answer:

snow_lady [41]2 years ago

7 0

Answer:

C. 88

Explanation:

f(x) = 4x + 8 || g(x) = x² + x

fg( -5 )

go from right to left in such function problems.

replace x with [ -5 ]

f( (-5)² -5)

f(20)

[ replace x with 20 ]

4(20) + 8

80 + 8

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−2(2x+3)≤26 - 2 2 x + 3 ≤ 26 ?

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$\huge \boxed{\mathbb{QUESTION} \downarrow}$

$- 2 ( 2 x + 3 ) \leq 26.$

$\large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}$

$- 2 ( 2 x + 3 ) \leq 26$

Divide both sides by -2. We know that since 2 is negative, it'll be < (less than) 0. So, the direction of inequality will change.

$2x+3\geq \frac{26}{-2} \\$

Divide 26 by -2..we'll get the answer as -13.

$2x+3\geq -13$

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Subtracting -13 by 3..we'll get the answer as -16.

$2x\geq -16$

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Divide -16 by 2..we'll get the answer as -8.

$\huge \boxed{ \boxed{ \bf \: x\geq -8 }}$

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