Math 1330 - Exam 2B Turn in Scantron and exam. Make sure to put name and R number on scantron. Name: For questions 11-14, use the given tables. The tables below give the numbers of some species of threatened and endangered wildlife in the United States and in foreign countries in 2015. United States Mammals Birds Reptiles Amphibians Fishes Endangered 84 79 20 98 cazze 25 Threatened 32 21 23 15 70 Foreign Mammals Birds Reptiles Amphibians Fishes Endangered 264 221 72 10 19 ST ) Jacob Threatened 20 19 24 3 DATE 11. Write a matrix A that contains the number of each of these species in the United States in 2015. (Place endangered species in the first row and threatened species in the second row.) 31 4 0 21 23 701 20 19 a b. 24 2 3 7 32 A B O 84 79 25 98 264 221 72 10 19] C. 84 79 25 20 981 d. [264 221 72 191 3 3 A B C 32 23 15 70 20 19 24 2 3 1 34 ABC 12. Write a matrix B that contains the number of each of these species outside the United States in 2015. (Place endangered species in the first row and threatened species in the second row.) a [264 221 72 10 191 3 15 701 20 b. [32 21 19 24 2 3 1 84 79 25 981 C. 20 19 24 2 3 264 221 72 10 19] d. [84 79 25 20 981 32 21 23 15 70] 13. Find a matrix with the total number of these species. Assume that U.S. and foreign species are different. 104 98 49 22 1011 a. b. 296 242 95 25 89 296 242 95 25 89 104 98 49 22 101 348 300 97 730 117 [52 40 47 17 73 C. 1 52 d. 40 17 73] 348 246 97 30 117 14. Find the matrix B - A. 12 2 -1 13 67 b. [-180 -142 -1 13 671 a. -180 -142 -47 10 81 12 2 -47 10 81 -12 -2 1 -13 -671 d. [180 142 47 -10 -791 C. 180 142 47 -10 -79 L-12 -2 1 -13 -67 p8 3 Eileen Barry at TTU Math and Statistics Dept Spring 2022