A set of data is collected, pairing family size with average monthly cost of groceries.
Using the least squares regression method, which is the
line of best fit?
400 4y
line b
360 +
line c
320 +
Oline a
line b
Olinec
None of the lines is a good fit for the data
line a
280
240 +
Grocery Cost ($)
200
160 +
120 +
80
40
+
2 3 4
Family Members
5
6

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b? define a variable for the situation. write an inequality that represents the situation. solve the inequality to find out how many months he needs to keep the website for site a to be less expensive than site b. using words, describe how many months he needs to keep the website for site a to be less expensive than site b.

Describe the domain and range of y=2(3)^x-2+5

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)