49. Samantha Sweigart invested $12,600 in the MFS Utilities “B” Mutual Fund. The net asset value of the fund at the time of purchase was $18.00 and was back-loaded with a
loading rate of 3.0%. When she sold her fund shares, the net asset value was $20.25.
(a) How many shares did Samantha buy? (b) Considering the back-end load, how
much profit (loss) did Samantha make on her investment?

i dont know

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.

0.02040816326