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Keisha is working to complete her summer reading in one week this is so she can chill for the remainder of the summer she read (2x^2+5x-3) pages of unbroken on monday (5x-3) pages on tuesday and (6x^2+ 2) pages on wednesday how many pages did she read in three days

Respuesta :

sqdancefan
We suppose that's just an odd way of asking the sum of three polynomials.
  (2x^2 +5x -3) +(5x -3) +(6x^2 +2) = x^2*(2+6) +x*(5+5) +(-3-3+2)
  = 8x^2 +10x -4 . . . . . "pages in 3 days"
mstepffer

Answer:

Keisha read 98 pages in three days.

Step-by-step explanation:

To know the total of pages that Keisha read in general, we have to sum the polynomials given in the problem, be

[tex]f(x)=(2x^2+5x-3)+(5x-3)+(6x^2+ 2)[/tex]

then

[tex]f(x)=8x^2+10x-4[/tex]

Now that we have the expression for her general reading, we need to evaluate it in the number of days that we wish to know how many pages she read, therefore we have to make the following calculation

[tex]f(3)=8*(3^2)+10*(3)-4=98[/tex]

Finally, we can conclude that Keisha read 98 pages in three days.

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