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?

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation:

if she was to only spend a dollar she can get 1lb

step-by-step explanation:

if gloria has "carry over" minutes, (that is, any minutes paid for but not used in a month can be applied to her payment for minutes in the next month,) her total usage for the three months is: total minutes = 320 + 243 + 489 = 1052 minutes number of 200 minute blocks = 1052/200 = 5 r52 (that is 5 with a remainder of 52) rounding up the number of 200 minute blocks gives her usage for the three months as 6 blocks. the cost for six blocks is 6 x $25 = $150 she also has 200 - 52 or 148 carry over minutes if gloria pays each month and unused minutes are lost, applying the rounding up procedure to each month gives: first month usage of 320 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 second month usage of 243 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 third month usage of 489 minutes rounds up to 3 blocks of 200 minutes for a payment of 3 x $25 = $75 total payments for the three months are $50 + $50 + $75 = $175 get the plan with carry over minutes!

b. hoped i'm right lol

step-by-step explanation: