Determine which relation is a function.

graph with points plotted at (negative 3, negative 1), (negative 4, 3), (negative 2, negative 2), (negative 1, 0), (2, 0), and (3, 2).

coordinate gridgraph with points plotted at (negative 2, 1), (negative 1, 3), (0, 2), (0, negative 1), (1, 3), and (2, 1).

graph with points plotted at (negative 4, 3), (negative 2, 1), (negative 1, 3), (negative 1, negative 1), (1, 1), and (2, negative 1).

graph with points plotted at (negative 2, 1), (negative 2, negative 2), (negative 1, 3), (0, 1), (2, 0), and (2, negative 2).

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 844

step-by-step explanation:

it is 844 because if you add 836.50 + 7.5 you will get 844