Which of the equations are true identities? A. n3 + 3n² + 2n = n(n + 1)(n +2)
B. (a + 3)2 – 9 = a + 6a

Choose 1
Only A
Only B
Both A and B
Neither A nor B

gregory's graph is incorrect because it shows 2 inches of growth for each week when it should show 0.75 inches of growth each week.

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.

the answer is d

step-by-step explanation:

i believe the answer is letter c) 8

step-by-step explanation: