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1)Funtion f(x)=2/x+5 what should the correct statement be: a)As x--->infintiy, f

ID: 2844054 • Letter: 1

Question

1)Funtion f(x)=2/x+5  what should the correct statement be:


a)As x--->infintiy, f(x)---> +infinity

b)As x--->+infinity, f(x)-->0

c)As x-->5^+, f(x)-->+infinity

d)As x-->5^-, f(x)-->+infinity


2)WHAT IS THE REMAINDER WHEN x+3 is divided into x^4-5x^2+12x+16?


3)what is the funtion that has a domain {xER l x not equal 3} on {xER l  -2<x<3}

4) WHAT is the SOLUTION of  -10_< 3x +5 _<8?


5)An open-topped box can be made from  sheet of cardboard measuring 50 cam by cutting congruent squares from the four corners and folding up the sides.  Write a polynomial function to represent the volume of such a box, and then determine the dimensions that result in a volume greater tha 4000 cm^3.    SHOW ALL YOUR STEPS

Explanation / Answer

1) doubt: Is (x+5) in the denominator or just x??


2) To find the remainder, just put x = -3 in the dividend.


hence remainder = -3^4 - 5 * -3^2 + 12* -3 + 16

= 81 - 45 - 36 +16

= 16


3) NOT sure what the question means!


4) -10 _< 3x + 5 _< 8

-10 - 5 _< 3x _< 8 - 5

-15 _< 3x _< 3

-5 _< x _< 1



5) There is some data missing i believe!

WHAT IS THE AREA OF CARDBOARD PROVIDED??

WHAT IS 50 cam?