13. At the farm, each fenced pen holds 5 cows. What variable could be used to
calculate the total number of cows on the farm?
a. C, the number of cows
b. p, the number of pens
c. v, the number of visitors at the farm
d. b, the bales of hay to feed the cows

Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato