A consumer organization studied the effect of the age of an automobile owner on the cash offer for a used car. Twelve persons in each age group (Group 1: young, Group 2: middle, Group 3: elderly) acted as the owner of the same used car and solicited cash offers from 36 dealers selected at random. The cash offer for each dealer was recorded. What are the experimental units in this experiment

c.35

step-by-step explanation:

8+13=21

21+8=29

29+6=35

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.