Answer:
4.23 x 10 to the 4, 2 x 10 to the 3, 9.2 x 10 to the 6, 4 x 10 to the 3, 8 x 10 to the 7, and 3.2 x 10 to the 10.
Step-by-step explanation:
I will explain in the comments to this response
 
        
             
        
        
        
A)  Y U Z { B, C, D, F, G, H, K, T, L, M, N, W}
b)  n(YUZ) {5}    (<em>n</em> is the number of elements in the set)
c)  X AND Y {K}
d)  n(X AND Y) {16}
I'm not sure of that notation for e and f. Can you tell me what the X\Y means?
        
             
        
        
        
Answer:
Expand the brackets, and simplify.
(4t - 8/5)-(3-4/3t) = (4t +4/3t) + ( -8/5 - 3) = 5 1/3t - 23/5 = 16/3t - 23/5
5(2t + 1) + (-7t + 28) = 10t + 5 - 7t + 28 = 3t + 33
(-9/2t + 3) + (7/4t + 33) = (-9/2t + 7/4t) + (3 + 33) = -11/4t + 36
3(3t - 4) - (2t + 10) = 9t - 12 - 2t - 10 = 7t - 22
 
        
             
        
        
        
where is the rest of the question?
is that it?