Answer:
taco: $1.49 each
burrito: $1.79 each
Explanation:
Let b = cost of one burrito
 t = cost of one taco
(1) 3b + 4t = 11.33 (2) 9b + 5t = 23.56
Multiply (1) by -3 and add to (2) -9b - 12t = 33.99
 - 7t = - 10.43
 t = 1.49
 3b + 4(1.49) = 11.33
 3b + 5.96 = 11.33
 3b = 5.37
 b = 1.79