Hank counted the number of scratches on cars of different ages. Hank then created the scatter plot below showing the relationship between the age of a car (x) and the number of scratches found on the car ly). Part A
In 3-4 sentences describe why this is the line of best fit for the data shown on the graph. Be sure your explanation includes the following words
- Positive correlation or Negative correlation
-line of best fit
-Strong Correlation or Weak Correlation
-data points
scatter plot
Part B
Use the line of best fit to predict the number of scratches in a car when the age of the car is 30 years old. Explain how you arrived at your conclusion

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺

current in the circuit at time t is /, then the power delivered to the resistor is

step-by-step explanation: