Answer:

Hence, option C is true.
Step-by-step explanation:
Given the expression

Solving for 'm'

Flip the equation

Expanding by applying the distributive law: 

Add (-1)/2 × kn to both sides

simplify

Divide both sides by k/2


Therefore,

Hence, option C is true.
Step-by-step explanation:
a) r=d/t ( same as formula of speed)
b) r= 665280/3=221760 feet/hr
c) distance in miles = 665280/5280= 126
so r=126/3 = 42 miles/hr
d) i think using miles makes more sense cz using feet will result in greater number of values so there is a greater chance of human error
3 times 6 18 and do that 6 times add