Answer:
x = 4 and 3
Step-by-step explanation:
[7±√(-7)²-4(1)(12)]/2
x = 4, 3
 
        
             
        
        
        
Geometric sequences go up due to a common ratio. Here the common ratio can be worked out by dividing a term by its previous term e.g term 2 divided by term 1.

Therefore the common ratio is 6.
 
        
        
        
Answer:
5. a) 2.140 + 1.725 = 3.865
 b) 29.99 + 1.42 = 31.41
 c) 6.157 - 1.009 = 5.148
6) 7.4 - 0.0022 = 7.2978 ✅
 7.39 - 0.0012 = 7.3888
7. 140minutes / 2 hours and 20 minutes