Can someone help with these and please show work

Step-by-step explanation:

3.)

34 + 3√(4 • 6 ÷ 2)^2 + 5^2

34 + 3√(12)^2 + 25

34 + 3√144 + 25

34 + 3√169

34 + 3 × 13

34 + 39 = 73

4.)

|9 - 12 • 3| - 2 + 10/2^2 + 10 - 7

|9 - 36| + 8/4 + 10 - 7

9 + 36 + 8/7 = 53/7

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.