Company A sells a 500-minute prepaid calling card for $30. Company B sells a 1,000-minute calling card for $50. How can you determine the better buy without finding the unit price? Please help asap!! Will give 19 points!

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!