Secret messages can be encoded by using a code and an encoding matrix. If we have the code:  and an encoding matrix: E = , we can encode a message by taking every two letters of the message, converting them to their corresponding numbers, creating a 

/> matrix, and then multiplying each two numbers by E. Use the code and encoding scheme above and an additional encoding matrix, F = , to answer the question.If the letters to be encoded are L = , show that E(FL) = (EF)L.



What will be an ideal response?

---

E(FL) =   =   = 
(EF)L =    =   = 

Mathematics

Enrollment at a certain university t years after calendar year 2000 is given by . According to the model, for which calendar year will enrollment reach 24,363.00? Round your answer to the nearest whole number. ?

A. 2010 B. 2007 C. 2005 D. 2012

Graph the function.f(x) =  x

A.

B.

C.

D.

Solve the proportion two different ways. First in decimal form, then in fraction form. Write your answer in lowest terms. = 

A. 0.02082857 or 
B. 0.18 or 
C. 1.26 or 1
D. 12.6 or 12

Solve the equation or inequality graphically. Express solutions or endpoints of intervals rounded to the nearest hundredth, if necessary.- ? -x - 2

A. [-1, -2.2] B. [1, 2.2] C. (-?, 1] ? [2.2, ?) D. (-?, -2.2] ? [-1, ?)