1 year ago

Last weekend, Lena worked 7.5 hours on Friday, 9.75 hours on Saturday, and 6.25 hours on Sunday.

Mathematics

1 answer:

Gemiola [76]1 year ago

3 0

Answer:202.1

Step-by-step explanation:

Add all the days she worked up (7.5+9.75+6.25) =23.5

Now simply just multiply it with 8.60 and you get your answer

Hope this helps :)

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2 years ago

Which graph represents the function f(x)=x4+4x3−12x2−32x+64?

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$f(x)=x^4+4x^3-12x^2-32x+64$

The degree of f(x) is 4. Also the leading coefficient is 1 and it is positive

So as x approaches infinity then y approaches infinity

as x approaches -infinity then y approaches infinity

The first and fourth graph goes up and it satisfies the above . so we ignore the second and third graph.

Now we check the x intercepts of the first graph

x intercepts of first graph is -4 and 2

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$f(x)=(-4)^4+4(-4)^3-12(-4)^2-32(-4)+64=0$

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So -4 and 2 are the x intercepts that satisfies f(x)

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1 year ago

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