Recall the bus and trolley matrices from the lesson:
b =
1 3 1 0
2 0 2 2
2 1 0 1
0 2 1 0
and =
1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1

a. explain why it makes sense that b= in the context of the problem.
b. multiply out b and to show b=
c. consider the multiplication that you did in part (b). what about the arrangement of the entries in the identity
matrix causes b= b?

Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are

What are the steps to solving the inequality 3b + 8 ≥ 14?

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities