Need ! which statement best describes the graph of -x3 - x2 + 4x + 4? a. it starts down on the left and goes up on the right and intersects the axis at x = -2, 2, and 4.b. it starts down on the left and goes up on the right and intersects the axis at x = -2, -1, and 2.c. it starts up on the left and goes down on the right and intersects the x-axis at x = -2, -1, and 2.d. it starts up on the left and goes down on the right and intersects the axis at x = -2, 2, and 4.

Firstly, simplife the function in the following way:

.

There are three x-intercepts: x=-1; x=2 and x=-2 (therefore, options A and D are incorrect).

Since before brackets is sign "-", you should state that graph starts down on the left (you can check this substituting smaller negative number than -2 into function expression. For example, if x=-10, then f(-10)=-(-10+2)(-10+1)(-10-2)=-(-8)(-9)(-12)>0) and goes up on the right (you can check this substituting greater positive number than 2 into function expression. For example, if x=10, then f(-10)=-(10+2)(10+1)(10-2)=-(12)(11)(8)<0).

correct choice is B.

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.

muyb ajo

step-by-step explanation:

jegosu