Mario collects seashells and sells them to tourists. the function s(t) approximates how many seashells mario collects per hour. the function w(h) represents the number of hours per week mario spends collecting seashells. what are the units of measurement for the composite function s(w(

Shells per week is the unit for this composite.

Step-by-step explanation:

For example, if my s(t) function is s(t) = 4t, this says that I can collect 4 shells in one hour.  If my W(h) function is W(h) = 3h, this says that I work 3 hours per week collecting shells.  

If you can collect 4 shells in 1 hour and you work 3 hours per week, you collect a total of 12 shells that week.  

The units are shells per week

b

step-by-step explanation:

calculate the scale factor as the ratio of corresponding sides, image to original, that is

scale factor = = = = 1

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option