Plz help me with this question we are timed and its a big part of our grade!

The triangles are similar. what is the value of x? show your work.

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?