Answer:

Step-by-step explanation:

- Principal=P=$2
- Rate of interest=8%=R
- Time=T=10years
Interest be I




Now
Value of coin after 10years =2+2.8=<u>4</u><u>.</u><u>8</u><u>$</u>
Answer:
26.5 units
Step-by-step explanation:
The height of the ball at any time t is given by :
...(1)
We need to find the maximum height of the ball.
For maximum height, put 
i.e.

Put t = 1.25 in equation (1) to find the maximum height.
So,

So, the maximum height reached by the ball is 26.5 units.