Question

2. The fuel efficiency (in kilometres per litre) of a bus going at a speed of x kilometres per hour is given by
1
the polynomial
$- 1 \div 300x }^{2} + 1 \div 2x$
Find the fuel efficiency when x = 65 km/h. Find the speed the bus should travel at to save the most fuel​

Answer 1

Answer:

sorry did not understand