This is an equation of degrees 6 so it will have a total of 6 roots.If you draw the
graph on calculator it touches the x axis at x = -2 and x = 2
If we plug in x =2 and x = -2 they fit the equation .
Also as the graph just touches the x axis this shows that x = 2 and x = -2 are duplicated
That gives us the 4 roots and also the +/- 2i giving a total of 6 roots.
The second option is correct
Answer:
d
Step-by-step explanation:
Answer:
y = tan(x -π) -1
Step-by-step explanation:
It looks like a straight tangent function shifted down one unit. Since the tangent function has a period of π, ...
tan(x -π) = tan(x)
so you're only looking for the function that has a translation downward of 1 unit. Of course that translation is accomplished by adding -1 to the original function.
The appearance of the graph is of ...
y = tan(x) -1
The choice that is equivalent to this is ...
y = tan(x -π) -1
6.99/6 =1.16
13.99/24=.58
Therefore better to buy more as the unit price per item is cheaper