Solve the equation. -3x + 7 = -21​

Step-by-step explanation:

-3x + 7 = -21

3x=28

x=28/3

hope it helps

Move all terms that don't contain x to the right side and solve.

Exact Form: x=283

Decimal Form:

x=9.3

Mixed Number Form: x=913

Step-by-step explanation:

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.