WILL BE MARKED BRANLIEST: Activity Recall that Betty arranged equal numbers of movies on four shelves of a shelving unit and placed 6 of her favorite movies on the top shelf. If x is the number of movies on each shelf, the expression for the total number of movies on the shelving unit is 4x + 6.

Part A
If each of the 4 shelves holds 12 movies, how many movies does Betty have on her shelving unit? Show your work.

54

Step-by-step explanation:

4x + 6 movies

12 movies,

x =12

4x + 6  for x= 12

4(12) + 6 = 54

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 simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b