HELP ME ASP PL
what is X
1- Z/5=9
A: Z=50
B: Z=44
C: Z= -2
D: Z= -40

Kayla made observations about the sellin price of a new brand of coffee that sold in the three different sized bags she recorded those observations in the following table 6 is $2.10 8 is $2.80 and 16 is to $5.60 use the relationship to predict the cost of a 20oz bag of coffee.

Ineed with math stuff it involves graphs

Will give brainliest b. describe the function over each part of its domain. state whether it is constant, increasing, or decreasing, and state the slope over each part.