Answer:
20
Step-by-step explanation: -13 to 7 think about that. We have to add 13 to make it 0. Then we add 7. So 13 plus 7 is 20. Enjoy :)
Step-by-step explanation:

Answer:
2:3
Step-by-step explanation:
You can simplify 12/18 to 2:3 also if michel is that good at basketball he should go to the NBA
Answer:
8.72 x 10^-2
Step-by-step explanation:
Answer:
a) 4.392317 mt
b) 9 seconds
c) 
Step-by-step explanation:
We have

where t is given in seconds and t in meters.
<em>a)How far has the point traveled 21 seconds after it started moving?</em>
By replacing t=21 in our equation we get

<em>b)If the point has traveled 3.16993 meters, how many seconds have elapsed since it started moving?</em>
We need to find a t such that f(t) =3.16993.
This can be accomplished by using the definition of 

<em>c)Write a function
that determines the number of seconds that have elapsed since the particle started moving in terms of the distance (in meters) the particle has traveled.</em>
is given by the definition of log
