Please someone help quickly thank you very much

I think the answer is 81.

Step-by-step explanation:

Vertical angles are congruent.

x + 3 = 84

  - 3  = -3

x = 81

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.

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315