Is my answer correct ?

i believe it’s either (b) or (c)

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?