I need help with this ASAP I’m on a timer ⏱

See below for answers.

Step-by-step explanation:

a) I'm getting on my TI-84 calculator -> y-hat=4.8722x-37.6767

b) The correlation coefficient would be r=0.94, which means there's a very strong positive linear correlation between the lengths and costs

c) The slope shows a positive trend since it's positive.

d) Using our linear regression equation from "A", we have y-hat=4.8722(20)-37.6767=59.7673, or about $59.77

e) Using our linear regression equation from "A", we have 147=4.8722x-37.6767, which when solved, x=37.9041706, or about 37.9 ft length

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:

d

step-by-step explanation:

i used the pitagoras theoreme