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.
correlation
coefficient
0.3
grade
level
9th grade
10th grade
11th grade
12th grade
-0.11
0.2
-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

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation:

stethere all not eveanp-by-step explanation:

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart