In point estimation a. data from the population is used to estimate the population parameter b. data from the sample is used to estimate the population parameter c. data from the sample is used to estimate the sample statistic d. the mean of the population equals the mean of the sample

Option B) data from the sample is used to estimate the population parameter                  

Step-by-step explanation:

Point estimation:

Thus, the correct answer is

Option B) data from the sample is used to estimate the population parameter

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation: