For the function f x x3 2x2 5 evaluate and simplify f 4 b

For the function f (x) = x^3 - 2x^2 + 5, evaluate and simplify f (-4). b) A company stocks paper in 3 colors and 2 styles. The chart below shows the probability that a ream of paper chosen at random Is of each type. What is the probability that a ream chosen at random Is white or unlined?

Solution

Solution:

7(a)

f(x) = x³ -2x² +5

plug x = -4

f(-4) = -4³ -2(-4)² +5

f(-4) = -64 -32 +5

f(-4) = -91

Answer: -91

(b)

the probability that a ream chosen at randoom is white or unlined = ( white ) or Unlined

= ( total probability for white ) + total for unlined - ( common )

= 0.20 + 0.55 + +0.55 + 0.02 +0.04 - 0.55

= 0.26+ 0.55

=0.81

Answer: 0.81