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slava [35]
4 years ago
15

Help please !!:) For y =3x -2x^2 +5x^3 show how to find the value for y when x = 3

Mathematics
1 answer:
victus00 [196]4 years ago
7 0

y = 3x-2x∧2+5x∧3

When we replace x with value 3 we get

y = 3 * 3 - 2 * 3∧2 + 5 * 3∧3 => y = 9-2*9+5*27 => y = 9-18+135 => y = 126

good luck!!!

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Answer:

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Step-by-step explanation:

We know the speed (55 knots) is 6 more than 3.5 times the winner of the monohull in the 2007 tournament.

So let's set the variable for the speed of the monohull to <em>m</em>. Now, let's set up an equation:

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We can solve this by first subtracting 6 from both sides to get:

49 = 3.5 * m

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