Which of the following is the graph of the quadratic function y=x^2 - 4x + 4?

D

Step-by-step explanation:

convert into vertex form

x^2-4x+4 = (x-2)^2 +0

vertex: (2, 0)

Graph D has vertex (2, 0)

look at x=0 and plug in 0 for any x you find in the equation

f(0) = 0² - 4*0 +4 = 4

c is out of the race then

let's do this again, but test for x=1 and x=2

f(1) = 1² - 4*1 + 4 = 1

f(2) = 2² - 4*2 +4 = 0

a and b are out

its graph d

when testing like this, choose easy-to-calculate numbers to find out what points you get when asking for the y-value at an arbitrary x-place

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.

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.