Answer:To round 0.994 to the nearest tenth consider the hundredths’ value of 0.994, which is 9 and equal or more than 5. Therefore, the tenths value of 0.994 increases by 1 to 0.
0.994 rounded to the nearest tenth = 1.0
Step-by-step explanation:
 
        
                    
             
        
        
        
The velocity of the particle is given by

Since  and
 and  , we get
, we get


Similarly, the position function is obtained via

We know  and we're told that
 and we're told that  , so
, so


making the answer A.
 
        
             
        
        
        
Hello There!
As for this problem, we would have to set up an equation in order to determine the missing age. We would do this because we want to find the missing age and by setting up an equation it will help find the age easier, as opposed to manually calculating it. With that said, let's begin to solve.
First, we would create an equation based on what the question says, which would look as:
x + x + 2 = 12 
2x + 2 = 12
Subtract two from both sides.
2x = 10 
The grand daughter is 5 years old and since the grandson is two years older he is 7.
Thus,
The age of the granddaughter is 5
The age of the grandson is 7