The school’s guidance department compares the grade-point averages and standardized state test scores for 10 students in each grade. The table below shows the correlation coefficient for each data set. Grade Level Correlation Coefficient 9th grade 0.3 10th grade –0.1 11th grade 0.2 12th grade –0.8 For which data set(s) is a linear regression model reasonable? 9th grade and 11th grade data sets 10th grade data set 10th grade and 12th grade data sets 12th grade data set

answer:

c) the x-coordinate of the center of the circle increases by 3

step-by-step explanation:

let's assume

number of candles set =x

price of of x candles =p(x)

we are given

a candle maker prices one set of scented candles at $10 and sells an average of 200 sets each week

so, we get point as (200,10)

he finds that when he reduces the price by $1, he then sells 50 more candle sets each week

so, we can find slope

now, we can use point slope form of line

now, we can plug values

we can use point

and find b

now, we can plug it back

and we get

now, we can find revenue

we know that

revenue = price*quantity

so, we get

  or  

sin y = 7/q

7 is the opposite side length, q is the hypotenuse

tan y = 7/r

7 is the opposite side length, r is the adjacent side length

using sohcahtoa ^^^^

cos y = adjacent/hypotenuse

cos y = r/q

1=b 2=c 16=c can i get brainliest