If only 1/4 of the parent material is left and the half-life of the element is 10,000 years, how old is this sample?
O A. 2500 years
B. 5000 years
O C. 20,000 years
O D. 30,000 years.

c.  250 miles.

Step-by-step explanation:

We have been given a formula of , where d is the distance, r is the speed, and t is the time.

To find the distance traveled in 5 hours at a rate of 50 miles per hour, we will substitute our given values in distance formula as:

Therefore, we have traveled a distance of 250 miles.