Assume that the current date is February 1, 2011. The linear regression model was applied to a monthly time series data based on the last 24 months' sales. (from January 2009 through December 2010). The following partial computer output summarizes the results. Coeffficient Estimate t Intercept 4.3 2.07 Slope 1.6 2.98 Determine the predicted sales for this month. a. 45.9 b. 42.7 c. 44.3 d. 109.1 e. 113.4

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

fabric (square meters)                   cloaks

7                                                           21

4/3                                                         4

step-by-step explanation:

we are told that harry needs 2 square meters of fabric for every 6 wizard cloaks he makes.

1. first of all we will find how many cloaks can be made from 1 square meter of fabric by dividing 6 by 2.

we can see that 3 cloaks can be made from 1 square meter of fabric. now we will multiply 3 by 7 to find number of cloaks made from 7 square meters of fabric.

therefore, harry will make 21 cloaks from 7 square meters of fabric.

2. let us find how many square meters of fabric will be needed to make 4 cloaks.

first of all we will find fabric needed for 1 cloak by dividing 2 by 6.

we can see that fabric needed for 1 cloak is   square meter. now we will multiply   by 4 to find fabric needed for 4 cloaks.