A.) simplify the expression and explain each step 4(3x+2)-2 b.) factor the expression completely 20b-16

4(3x+2)-2

distribute

4*3x + 4*2 -2

12x +8-2

combine like terms

12x+6

b)   20b-16

you can factor out a 4

4(5b-4)

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.

tangent

step-by-step explanation: