QUiCK whoever gives me the right answer gets brainliest

speed of R miles per hour

miles depends on time

thats why it's miler per hour

i think asking google will you get the answer to that question

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!