The quadratic function f(x) = -x2 - 6x - 8 is graphed. What are the solutions of the quadratic equation 0 =-
x2 - 6x-8?
2
O 2 and 4
-2 and 4
0-2 and -4
O2 and 4
2
X
-654-3
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The roots of the quadratic function are   and .

Step-by-step explanation:

Let be , the function is now graphed by using a graphing tool and whose outcome is added below as attachment. After looking the image, the roots of the polynomial are and , respectively. It can be also proved by algebraic means:

1) Given

2) Distributive property/

3) Addition

4) Distributive property/Associative property

5) Distributive property/Result

Which supports the graphic findings.

The roots of the quadratic function are   and .

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.