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3 years ago

11

What is the value of 6x squared+ 4x + 8 when x=7? Please answer this I really need help!

1 answer:

stealth61 [152]3 years ago

3 0

Let’s write it simply, that helps us solve it easier.
6x^2+4x+8
Now, insert 7 in place of x.
6(7)^2+4(7)+8
Now, multiply.
42^2+28+8
Solve for exponents.
1,764+28+8
Add.
1,792+8
1,800
Hope this helps!

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Answer:

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(b) Domain: $0$ <em>(See attachment for graph)</em>

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Step-by-step explanation:

Given

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$l = length$

$w = width$

Solving (a): A function; l in terms of w

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Solving (b): The graph

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$l = -w + 21$

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--------------------------------------------------------------------------------------------------

To check this

When $w = 1$

$l = -1 + 21$

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When $w = 20$

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$(w,l)= (20,1)$

--------------------------------------------------------------------------------------------------

<em>See attachment for graph</em>

<em></em>

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$l = -w + 21$

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$l = f(w)$

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$l = -w + 21$ becomes

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